Justly Right

Words meaning just, right and related things in Celtic languages.

Justice

Words marked with a * are reconstructions.

Proto-Celtic *kowwaris, *komwīros = just, rightful, proper, fitting
Old Irish (Goídelc) cóir = even, fitting, just, proper
córae = justice
córus = justice
Middle Irish (Gaoidhealg) cóir, coair, coir = even, well-proportioned, straight, proper, correct, right, suitable, fitting, just
córae, corae = correctness, propriety, justice, lawsuit, claim, right, proper, peace, amity, concord
córus, corus = justness, rightness, proper arrangement, propriety, peace, agreement
Irish (Gaeilge) cóir [koːɾʲ/kɔːɾʲ] = justice, equity, proper share, due, proper provision, accommodation, proper condition, proper equipment
cóireáil = treatment, treat
cóireanta = neat, tidy
cóirigh = to arrange, dress, mend, repair
cóiríocht = fitness, suitability, accommodation, equipment, fittings, furniture
cóiriú = arrangement, dressing, repair
cóiriúchán = arrangement, dressing
éagóir = injustice, wrong, unfairness, inequity
Scottish Gaelic (Gàidhlig) còir [kɔːrʲ] = right, justice, duty, obligation
còireachadh [kɔːrʲəxəɣ] = (act of) arranging, arrangement
còiread [kɔːrʲəd] = probity, goodness, kindness
còrachadh [kɔːrəxəɣ] = arranging, arrangement
Manx (Gaelg) cair = privilege, property, rights, duty, righteousness, due, right, just, good
cair aascreeuee = copyright
cair vie = bon voyage, favourable wind, god speed, pleasant journey
cairagh = fair, impartial, just, proper, justifiable, justly
cairal = right, righteous, upright, upstanding
cairys = applicability, fairness, justice, right, uprightness
cairysagh = right
Proto-Brythonic *küwėr = complete
Old Welsh (Kembraec) couer = fully-equipped, arrayed, furnished, complete, orderly, prepared, ready, correct
Middle Welsh (Kymraec) kyveir, kyweir, cyweir = proper order, fit state, repair, provision
kyweyryau, kyỽeirir, kyweirio = to put in order, arrange, prepare, set to rights, repair, restore, equip
kyweiriawdr = one who sets in order, one who promotes unity or harmony; repairer
kyweirwr = repairer, restorer, amender
Welsh (Cymraeg cywair [ˈkəwai̯r] = proper order, fit state, repair, provision, seasoning, state of mind, mood, humour, temper, condition, state, plight, key (in music), song, harmony, fully-equipped, arrayed, furnished, complete, orderly, prepared, ready, correct
cyweiriaf, cyweirio = to put in order, arrange, prepare, set to rights, repair, restore, equip
cyweiriawdr = one who sets in order, one who promotes unity or harmony; repairer
cyweiriedig = arranged, set in order, preserved
cyweir(i)wr = repairer, restorer, amender

Etymology: possibly from Proto-Celtic *kom- (with, together), from PIE *ḱóm (beside, near, by with), and PIE *wīros (true) [source]. Words from the same roots include word for true and related things in Celtic languages, and beware, guard, reward, ward and weir in English [source].

Old Irish (Goídelc) cert [kʲer͈t] = fitting, proper, right
Middle Irish (Gaoidhealg) cert = correct, right, proper, fitting, fair, just, straight, even, exact, precise
Irish (Gaeilge) ceart [caɾˠt̪ˠ/cæɾˠt̪ˠ] = right, just, proper, true, correct, true, real, good, excellent
ceartaigh = to correct, rectify, amend, expound, mend
ceartaiseach = insistent on one’s rights, self-righteous, dogmatic, conceited, priggish
ceartaiseacht = self-righteousness, conceit, priggishness
ceartaitheach = corrective, amending
ceartaitheoir = corrector, rectifier, reformer, chastiser
ceartas = justice, rights
Scottish Gaelic (Gàidhlig) ceart [kʲar̪ˠʃd = right, justice, propriety, righteousness, accurate, correct, proper, right
ceartachadh [kʲar̪ˠʃdəxəɣ] = correcting, putting right, rectifying, correction
ceartachair = corrector, rectifier, regulator
ceartachd [kʲar̪ˠʃdəxg] = correctness
ceartas = [kʲar̪ˠʃdəs] = justice, right, equity
Manx (Gaelg) kiart = accurate, concession, correct, due, equity, even, exact, just, orthodox, precise, right
kiartaghey = to accommodate, adjust, amend
kiartys = accuracy, correctness, exactness
kiartyn = rights
Proto-Brythonic *kerθ = right, true, certain, vehement, terrible, awful, fine, wonderful
Middle Welsh (Kymraec) kerth = right(s), true, certain, vehement, terrible, awful, fine, wonderful
kerthrwydd = integrity, justice, awfulness
Welsh (Cymraeg certh [kɛrθ] = right(s), true, certain, vehement, terrible, awful, fine, wonderful, truth
certhrwydd = integrity, justice, awfulness

Etymology: from Latin certus (certain, fixed), from Proto-Italic *kritos, from *krinō (to sift, separate, distinguish, discern), from PIE *krey- (to sift, separate, divide) [source]. Words from the same roots include certo (certain, sure, reliable) in Italian, cierto (true, certain, specific) in Spanish, and certain, crime, crisis, discreet and secret in English [source].

Words marked with a * are reconstructions.

Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, eDIL – Electronic Dictionary of the Irish Language, In Dúil Bélrai English – Old Irish glossary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Lexicon Cornu-britannicum: A Dictionary of the Ancient Celtic Language of Cornwall, Dictionaire Favereau, TermOfis, Le dictionnaire diachronique du breton, Etymological Dictionary Of Proto Celtic

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Worms & Maggots

Today we’re looking at the words for worm, maggot and related things in Celtic languages.

Earth Worm

Words marked with a * are reconstructions.

Proto-Celtic *kʷrimis = worm
Old Irish (Goídelc) cruim [kruṽʲ] = maggot, worm
crumdoma = maggot heap
Middle Irish (Gaoidhleag) cruim, crúim = worm, maggot
crumach = full of reptiles
crumdoma = dunghill
cromóc = maggot
Irish (Gaeilge) cruimh = maggot, larva, grub, tiny insect, worm
crumhóg = maggot
cruimheach = maggoty
cruimheachán = venemous person
Scottish Gaelic (Gàidhlig) cnuimh [krɯ̃ĩv] = maggot, grub, worm
cnuimheach [krɯ̃ĩvəx] = maggoty
cnuimheag [krɯ̃ĩvag] = maggot, grub, worm
cnuimhneag [krɯ̃ĩvn̪ˠʲag] = maggot, worm
Manx (Gaelg) crooag = (flesh) worm, grub, maggot, worm
crooagagh = maggoty, wormy
Proto-Brythonic *prɨβ̃ [ˈprɨβ̃] = worm
Old Welsh prem = insect, fly, larva, maggot, grub, worm
Middle Welsh (Kymraec) pryuet, pryf = insect, fly, larva, maggot, grub, worm
pryuyedic = abounding in / infested with worms or maggots
Welsh (Cymraeg) pryf [prɨːv/priːv] = insect, fly, larva, maggot, grub, worm
pryfedaf, pryfedu, pryfedo = to breed worms of maggots, to become infested with worms or maggots
pryfediad = worm or maggot infestation
pryfedig = wormeaten, maggoty
pryfeteg = entomology
pryfiedig = abounding in / infested with worms or maggots
Middle Cornish (Cernewec) pref, prêv, pryf = any small animal, a vermin, an insect, a worm, a reptile
Cornish (Kernewek) pryv, prev = crawling animal, grub, insect, worm, weevil
pryv del = caterpillar
pryv prenn woodworm
pryvladher = insecticide
Middle Breton (Brezonec) preff, preuet, prenvv = worm
Breton (Brezhoneg) preñv = worm
preñvedik = vermiculated
preñvek = vermicular, wormlike, wormy
eneppreñveg, eneppreñvek = wormable

Etymology: from PIE *kʷŕ̥mis (worm) [source]. Words from the same root include cirmenis (maggot, grub) in Latvian, kirmis (worm) in Lithuanian, käärme (snake) in Finnish, کرم (kerm – worm) in Persian, and červ (worm, maggot) in Czech and Slovak [source].

Old Irish (Goídelc) dorb = worm, larva
Middle Irish (Gaoidhleag) dorb = small insect or worm
Irish (Gaeilge) doirb [kɑbʲ/kabʲ] = water beelte
doirbeach = infested with water beetles
Scottish Gaelic (Gàidhlig) doirb [dɤrʲɤb] = unspecific term for a small/tiny/insignificant creature (e.g. minnow, worm, leech, small person)
Manx (Gaelg) durrag = cabbage worm, larva of cabbage moth

Etymology: unknown

Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, eDIL – Electronic Dictionary of the Irish Language, In Dúil Bélrai English – Old Irish glossary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Lexicon Cornu-britannicum: A Dictionary of the Ancient Celtic Language of Cornwall, Dictionaire Favereau, TermOfis, Le dictionnaire diachronique du breton, Etymological Dictionary Of Proto Celtic

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Pickaxe

Today we’re looking at the words for pickaxe, pike and related things in Celtic languages.

Claes Oldenburg

Words marked with a * are reconstructions.

Middle Irish (Gaoidhleag) píce = pole, pike
pícóid = mattock, pickaxe
Irish (Gaeilge) píce [ˈpʲiːcɪ] = pike, fork, peak
píceáil = pike, fork, pitchfork, peak
píceálaí = forker, pitcher
píceán = peak, tip
Scottish Gaelic (Gàidhlig) pic, pìc [piːçgʲ] = pike
pìceach [piːçgʲəx] = armed with pikes, abounding in pikes
pìcear = pikeman
Middle Welsh (Kymraec) pig = point, spike, pike
pigo = to prick, pierce, goad, peck, sting, bite
pigawd = a thrusting or stabbing with a spear, a pricking
Welsh (Cymraeg) pig [piːɡ] = point, spike, pike, lance, pick(axe), prong, beak
pigach = darts
pigadail = obelisk, spire, pyramid, cone
pigaf, pigo = to prick, pierce, goad, peck, sting, bite
pig(i)aid = as much as can be picked up or carried on a pitchfork, beakful
pigau = pitchfork, hay-fork
pigawd = a thrusting or stabbing with a spear, a pricking
pigell = goad, prick, prickle
Middle Cornish (Cernewec) piga = to prick, prickle, sting
pigol = mattock, pick, pickaxe
Cornish (Kernewek) pig = grub axe, grubber, pick, pickaxe, pickle
piga = to goad, incite, sting
pigell = hoe, pick(axe), pickle
pigallas = to hoe
pigellik = picker
Middle Breton (Brezonec) pig = pickaxe
Breton (Brezhoneg) pik = piquant, point, pique
pikañ = to sting, bite, pinch
pikezenn = pike, spade (in cards)
pigell = pickaxe

Etymology (Irish): from Old French pik(k)e, from Latin pīcca (pickace, pike), possibly from Frankish *pikkōn (to peck, strike), or from Frankish *pīk (sharp point, pike), from Proto-Germanic *pīkaz (sharp point, pike, pickaxe, peak) probably of imitative origin [source].

Etymology (Scottish Gaelic, Welsh & Cornish): probably from English pike or the Middle English pyke (pike, sharp point), which ultimately come from the same Proto-Germanic roots as pik(k)e in Old French.

Words from the same roots include peck, pick, pike, pique, pitch in English [source].

Irish (Gaeilge) caib [kɑbʲ/kabʲ] = dibble
caibeáil = to plant with an implement, dibble
caibeáilaí = planter (of seed), dibbler
Scottish Gaelic (Gàidhlig) caibe [kɛbə] = space, mattock, iron part of tools
caibe-sìthe = fairy spade (amulet given to sick people & cattle)
Manx (Gaelg) kiebbey = spade, mattock
Old Welsh cep = pickaxe, mattock, hoe, ploughshare
Middle Welsh (Kymraec) keyp, keib, caib = pickaxe, mattock, hoe, ploughshare
Welsh (Cymraeg) caib = pickaxe, mattock, hoe, ploughshare
caib garddwr = hoe
caib big, caib bicys = pickaxe

Etymology: unknown

Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, eDIL – Electronic Dictionary of the Irish Language, In Dúil Bélrai English – Old Irish glossary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Lexicon Cornu-britannicum: A Dictionary of the Ancient Celtic Language of Cornwall, Dictionaire Favereau, TermOfis, Le dictionnaire diachronique du breton, Etymological Dictionary Of Proto Celtic

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Axes and Hatchets

In this post we’re looking at the words for axe and related things in Celtic languages.

Axe in wood

Words marked with a * are reconstructions.

Proto-Celtic *tāxslo- = axe
Old Irish (Goídelc) tál = adze
Middle Irish (Gaoidhleag) tál = adze
Irish (Gaeilge) tál [t̪ˠɑːlˠ/t̪ˠæːlˠ] = adze
Scottish Gaelic (Gàidhlig) tàl [taːl̪ˠ] = adze
tàl-fuinn = hoe
Manx (Gaelg) taal = adze

An adze cutting tool that has a curved blade set at a right angle to the handle and is used in shaping wood. [source].

Etymology possibly from the Proto-Indo-European *tetḱ-(dʰ)lo-, from *teḱ- (to sire, beget) [source]. Words from the same roots include architect, technical, text and textile in English, цясла́ [t͡sʲasˈɫa] (adze) in Belausian, тесло [tʲɪsˈɫo] (adze) in Russian, and teslă (adze) in Romanian [source].

Old Irish (Goídelc) túag = axe, hatchet
Middle Irish (Gaoidhleag) túag = axe, hatchet
túagaid = to hew, chop, strike with an axe
túagrótae = roadway cleared with an axe
Irish (Gaeilge) tua [t̪ˠuə] = axe, hatchet
tuadóir = axe-man, hewer, chopper
tuadóireacht = (act of) hewing, shaping, chopping
tuaigh = to chop (with an axe)
Scottish Gaelic (Gàidhlig) tuagh [tuəɣ] = axe
tuaghadair = axeman, axe-wielder
Manx (Gaelg) teigh = axe, chopper, hatchet

Etymology possibly from the Proto-Indo-European *(s)tewk- (to push, press, strike, beat, pierce), from *(s)tew- (to push, hit) [source]. Words from the same roots include tkát (to weave) in Czech, tkać (to weave, stick, tuck) in Polish, and тъка [tɐˈkɤ] (to spin, plait, entwine, weave) in Bulgarian [source], and words for hole & hollow in Celtic languages.

Proto-Celtic *biyatlis = (?)
Old Irish (Goídelc) biáil [ˈbʲi.aːlʲ] = axe, hatchet
Middle Irish (Gaoidhleag) bíail, biáil = axe, hatchet, battle-axe
Irish (Gaeilge) biail [bʲiəlʲ] = hatchet
Scottish Gaelic (Gàidhlig) biail = axe, hatchet (archaic)
Old Welsh bahell = axe
Middle Welsh (Kymraec) buyall, bwell, bwyeill = axe
bwyellic = small axe, hatchet
bwyallawt = axe stroke
bwiallawc = bearing an axe, armed with an axe; like an axe
Welsh (Cymraeg) bwyall, bwyell, bwell = axe, battle-axe
bwyellan, bwyellig = small axe, hatchet
bwyellangaib = pickaxe, hoe
bwyellod, bwyallod = stroke or cut with an axe, axe stroke
bwyellog, bwyallog = bearing an axe, armed with an axe; like an axe
bwyellwr = woodman
Middle Cornish (Cernewec) biail, boell, bool = axe, hatchet
Cornish (Kernewek) bool = axe, chopper, hachet
bolik = (small) axe, chopper, hachet
Middle Breton (Brezonec) bouhazl, bouchazl, bouchal, boc’hal = axe
Breton (Brezhoneg) bouc’hal [ˈbuː.ɣal] = axe, hammered
bouc’halig = hatchet

Etymology: from Proto-Celtic *bināti (to strike, hit, beat) from the Proto-Indo-European *bʰi-né-h₂-ti, from bʰeyh₂- (to strike, hew) [source]. Words from the same roots include billhook and bone in English, bain (to extract, separate, strike) and béim (a blow, emphasis, beat) in Irish, gofid (grief, sorrow, regret) in Welsh [source].

Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, eDIL – Electronic Dictionary of the Irish Language, In Dúil Bélrai English – Old Irish glossary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Lexicon Cornu-britannicum: A Dictionary of the Ancient Celtic Language of Cornwall, Dictionaire Favereau, TermOfis, Le dictionnaire diachronique du breton, Etymological Dictionary Of Proto Celtic

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Weak and Feeble

Words for weak, feeble and related things in Celtic languages.

WEAK

Words marked with a * are reconstructions.

Proto-Celtic *lubros = weak
Old Irish (Goídelc) lobur = weak, sick, infirm
Middle Irish (Gaoidhealg) lobar, lobur, lobor = weak, infirm, sick, afflicted
lobrae = weakness, infirmity, sickness
lobrán = weakling, weak person, afflicted person
loburda = sickly, ailing
loibríne = weak little one
Irish (Gaeilge) lobhar [tʲasˠ/tʲæsˠ] = leper, (literary) weak, ailing person, afflicted person
lobhra = leprosy, (literary) weakness, infirmity, affliction
lobhrach = leprous, (literary) weak, ailing, afflicted
lobhrán = leper, (literary) weakling, afflicted person
Scottish Gaelic (Gàidhlig) lobhar [l̪ˠo.ər] = leper, disgusting wretch
lobhar-leigheas = antiseptic
Manx (Gaelg) lourane = heat, warmth
louraanagh, louranagh, louraneagh = leprous
loihrey, lourey; louraanys, louraneys = leprosy
Proto-Brythonic *lluβr = (?)
Middle Welsh (Kymraec) llwfyr, llwrf, llwfr = cowardly, craven, timid
Welsh (Cymraeg) llwfr = cowardly, craven, timid, faint-hearted, unadventurous, apathetic, shy, mean, idle, lazy, improvident; damp; coward
llwfrgalon, llyfrgalon = timid, faint-hearted
Middle Breton (Brrezhonec) loffr, lofr = leper, leprous, oaf
lovradur = leprosy
Breton (Brezhoneg) lovr = leper, oaf
lovrezh = leprosy
lovrañ = to contract/give leprosy

Etymology: from the Proto-Indo-European *luprós and *lewp- (to peel, strip) [source].

Proto-Celtic *wannos = weak
Old Irish (Goídelc) fann = helpless, weak
Middle Irish (Gaoidhealg) fann = weak, helpless, soft, pliant
fannach = weak, weakling
fannaid = weakens, grows weak
fanntaise = a swoon, faintness
Irish (Gaeilge) fann [fanˠ] = faint, weak, languid
fannaigh = to weaken, enfeeble, grow weak
fannán = gentle breeze
fanntais = faaint, swoon, fainting-fit
Scottish Gaelic (Gàidhlig) fann [fãũn̪ˠ] = weak, feeble, faint, helpless, delicate
fannachadh [fan̪ˠəxəɣ] = becoming/making weak, fainting
fannachd [fan̪ˠəxg] = weakness, state of being off/spoilt (food)
fanntas [fãũn̪ˠdəs] = weakness, faintness
Middle Welsh (Kymraec) guan, gvann, gwan(n) = weak, feeble
guander, gvander, gwan(n)der = weakness, feebleness, debility
guanhau, gwanhau = to grow weak, weaken, languish
Welsh (Cymraeg) gwan [ɡwan] =weak, feeble, languid, faint, mild, gentle, lenient, sad, depressing, gloomy, unlucky, foolish, simple, credulous, timid
gwander = weakness, feebleness, debility
gwanedu = to dilute
gwanedig = enfeebled, enervated, faint
gwanhad = weakening, enfeeblement, enervation
gwanhau = to grow weak, weaken, languish
Old Cornish guan = weak
Middle Cornish (Cernewec) guan, gwan = weak, feeble, infirm, poor
gwander = weakness, infirmity, debility
Cornish (Kernewek) gwann, gwadn = faint, frail, weak
gwanna, gwadna = to weaken
gwannhe, gwadnhe = to weaken
gwannliwek, gwadnliwek = pale
Old Breton guoaean = weak
Middle Breton (Brezhonec) guan, goan, goann = weak
goanaff, goano = to weaken
Breton (Brezhoneg) gwan [ˈɡwãːn] = weak, intransitive
gwanaat [ɡwãˈnɑːt] = to weaken
gwanadenn, gwanded, gwander = weakness
gwanadur = weakening, dimming
gwanaj = weak
gwanded [ˈɡwãn.det] = weakness

Etymology: from the Proto-Indo-European *h₁weh₂-sn (to disappear, vanish), *h₁weh₂- (to leave, abandon, give out). English words from the same PIE root include vacant, vacuum, vain, void, wane, want and waste [source]

Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, eDIL – Electronic Dictionary of the Irish Language, In Dúil Bélrai English – Old Irish glossary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Lexicon Cornu-britannicum: A Dictionary of the Ancient Celtic Language of Cornwall, Dictionaire Favereau, TermOfis, Le dictionnaire diachronique du breton, Etymological Dictionary Of Proto Celtic

Flowing Slowly

Words for slow and related things in Celtic languages.

sloth

Words marked with a * are reconstructions.

Proto-Celtic *malnos/*mallo- = slow, lazy
Old Irish (Goídelc) mall [mal͈] = slow, tardy, late
utmall = unsteady, restless
Middle Irish (Gaoidhealg) mall = slow, sluggish
mallaigid = to make slow, retard
maill, moill = tardiness, delay
maillech = slowly-moving, leisurely, gentle
admall = very slow, dilatory
immall = very slow, wearisome, sad, sluggish
utmall = unstable, fickle, restless
Irish (Gaeilge) mall [mˠɑul̪ˠ/mˠɑːl̪ˠ/mˠal̪ˠ] = slow, late
mallachar = slowness, dullness, dimness
mallacharach = slow, dim
mallaibh = of late, lately
udhmhall = unstable, restless, unceratin, nimble, quick
Scottish Gaelic (Gàidhlig) mall [maul̪ˠ] = slow, deliberate, placid
mallan [mal̪ˠan] = sluggard, slowcoach
mallanach [mal̪ˠanəx] = slow, dilatory
Manx (Gaelg) moal = slow, sorry, tardy, unimpressive, backward, deliberate, dull, feeble, gradual, meagre

Etymology: possibly from PIE *mel- (to be late, hesitate) and *-nós (creates verbal adjectives) [source].

Old Irish (Goídelc) slaet = heap, layer, pile
Middle Irish (Gaoidhealg) slaet = a swathe, layer, pile, illness, disease
slaetach, slaebach = in layers, sweeping (hair)
Irish (Gaeilge) slaod = swath, layer, flowing mass, prostration, stupefication, float, raft; to mow down, lay low, flow, drag, trail, trudge
slaodach = in swaths, in layers, flowing, prostrating, heavy, oppressive, viscous
slaodacht = viscosity
slaodaí = trudger, slowcoach, lazy-bones
slaodaíocht = trudging, slowness, laziness
slaodchiallach = slow-witted
Scottish Gaelic (Gàidhlig) slaod [sl̪ˠɯːd] = raft, float, sledge, tow, drag, sluggard, slowcoach
slaodach [sl̪ˠɯːdəx] = slow, sluggish, dilatory, dragging, pulling, awkward, clumsy
slaodachadh [sl̪ˠɯːdəxəɣ] = dragging, hauling, slowing down
slaodachd [sl̪ˠɯːdəxg] = slowness, drowsiness, awkwardness
Manx (Gaelg) sleayd = dredge, trail, sledge, trailer
sleaydagh = trailing
sleayder = lug, trailing

Etymology: unknown [source].

Proto-Celtic *aramo- = quiet
Middle Welsh (Kymraec) araf, arav [ˈarav] = slow, leisurely, calm, quiet
arafu = to be(come) or make slow, slow down
arafaidd, arauaidd = slow, gradual, mild, gentle
arafhau = to make or become quiet or calm,
Welsh (Cymraeg) araf [ˈarav] = slow, gradual, tedious, tiresome, mild, meek, gentle, tender
arafu = to be(come) or make slow, slow down, retard
arafaidd = slow, gradual, mild, gentle, lovely, pleasant
arafedd = slowness, gentleness, tenderness
arafhau = to make or become quiet or calm, ease, abate, moderate
arafol = slow, gradual, slowing, delaying

Etymology: from PIE *h₁r̥h₃-mo-, from *h₁reh₃- (rest). Words from the same roots include Ruhe (calm, quietness, rest) in German, ro (calmness) in Danish, ro (peace, quiet, tranquility) in Swedish, and unruly in English [source].

Proto-Brythonic *segʉr = idle
Middle Welsh (Kymraec) segur = idle
segyra, segura, seguru, segvro = to (be) idle
segyrllyt, segurllyd = idle, lazy, sluggish, slothful
Welsh (Cymraeg) segur [ˈsɛɡɨ̞r / ˈseːɡɪr] = idle, unoccupied, inactive, lazy, slothful, disused, idle
seguro = to (be) idle, laze, linger, lounge around, rest
segurdod = idleness, laziness
segurllyd = idle, lazy, sluggish, slothful
segurwr = idler, lazy person
Middle Cornish (Cernewec) sigyr, zigyr = sluggish, lazy
Cornish (Kernewek) syger = idle, lazy, lethargic, slow
sygera = to seep, trickle
sygerans = seep(age)
sygerneth = idleness, laziness, lethargy
sygerus = at leisure, leisurely

Etymology: from Latin sēcūrus (careless, carefree, negligent, safe, secure), from sē- (without) and‎ cūra (care). Words from the same root include secure and sure in English, sicuru (safe, secure, sure) in Italian, seguro (secure, safe, sure) in Spanish and säker (safe, secure, sure, certain) in Swedish [source].

Proto-Celtic *uɸostatos = stable
Old Irish (Goídelc) fossad = firm, steady
Middle Irish (Gaoidhealg) fossad, fossud = stationary, fixed, firm, steady, steadfast, consistent, flat surface, level place, stopping-place, abode
Irish (Gaeilge) fosadh = stop, stay, rest, stable position, steadiness, stability
Scottish Gaelic (Gàidhlig) fosadh [fɔsəɣ] = cessation, desisting, recess, respite, (act of) abiding
Proto-Brythonic *gwostad = (?)
Middle Welsh (Kymraec) gwastat, guastat = flat, level, smooth
Welsh (Cymraeg) gwastad [ˈɡwastad] = flat, level, smooth, even, horizontal, continual, constant, quiet, peaceful, gentle, plain, level
Cornish (Kernewek) gwastas = flat, open, plain, smooth
Middle Breton (Brezonec) goustat, goustadic, goustadec, goustadic = gently, slowly
Breton (Brezhoneg) gou(e)stad = slow, slowly
doustadik = slow, slowly

Etymology: unknown [source].

Another word for slow in Cornish is lent, and lenthe means to slow down. This is possibly from (Old) French lent (slow), or from Latin lentus (sticky, slow, flexible).

In Middle Cornish the word hel means slow or tardy, and cosel/kozal means soft, quiet, slow or sluggish, which became kosel (calm, quiet, restful, still, tranquil) in revived Cornish.

Another Proto-Celtic word for slow is *dwāyo-. This became doé / doe (slow, sluggish) in Old Irish and Middle Irish, but has no descendents I can find in the modern Celtic languages.

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Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, eDIL – Electronic Dictionary of the Irish Language, In Dúil Bélrai English – Old Irish glossary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Lexicon Cornu-britannicum: A Dictionary of the Ancient Celtic Language of Cornwall, Dictionaire Favereau, TermOfis, Le dictionnaire diachronique du breton, Etymological Dictionary Of Proto Celtic

Deceitful Errors

Words for to error, deceit and related things in Celtic languages.

Deceitful Errors

Proto-Celtic *welsos = error, deceit
*wolsos = something wrong
Gaulish uolson = (?)
Old Irish (Goídelc) fell = deceit, treachery
fellaid = to act deceitfully
faill = neglect
Middle Irish (Gaoidhealg) fell = deceit, treachery
felle = treachery
felmaíne = deceitful riches
faill, fall = neglect, negligence
Irish (Gaeilge) feall [fʲɑːl̪ˠ/fʲal̪ˠ] = deceit, treachery, let-down, failure; to prove false to, betray, fail
fealladh = deception, betrayal, failure.
feallaire = deceiver, betrayer
feallaireacht = deception, betrayal
fealltach = deceitful, treacherous
fealltacht = deceitfulness, treachery
feallatóir = betrayer, traitor
feallatóireacht = betraying, treachery
faill = negligence, omission, chance, opportunity, time, occasion, cessation, easement
Scottish Gaelic (Gàidhlig) feall [fjaul̪ˠ] = treachery, conspiracy, trickery, deceit, falsehood
feallachadh [fjal̪ˠəɣ] = deceiving, deceit, deception
feallag [fjal̪ˠag] = trick
feallsach [fjaul̪ˠsəx] = mendacious, false, mock, pseudo
feallsachd [fjaul̪ˠsəxg] = mendacity, deceit
fealltach [fjaul̪ˠdəx] = fraudulent, traitorous
fealltair [fjaul̪ˠdɪrʲ] = deceiver, traitor
Manx (Gaelg) foall = deceit, felony, murder, slyness
foalsaght = deceit(fulness), fallacy, falseness, hollowness, hypocrisy
foalsey = affected, bogus, counterfeit, fallacious
foalsid = affectation, deceitfulness, falseness, fictitiousness, perfidiousness, untruth
foalserey = deceiver, hypocrite, sycophant
Middle Welsh (Kymreac) guall, gvall, gwall = mistake, error, oversight, fault
gwallawc, gwallawg = negligent, careless, loose, faulty, defective
guallus, gwalus, gwallus = negligent, careless, heedless, slack, remiss
Welsh (Cymraeg) gwall [ɡwaɬ/ɡwa(ː)ɬ] = mistake, error, oversight, fault, wrong, deceit, lie, defect, negligence, faulty, evil, deficient
gwallgof = madness, insanity, delirium, mad, insane
gwallgofaf, gwallgofi = to go mad, become insane, be frenzied or frantic
gwallog = negligent, careless, loose, faulty, defective
gwallus [ˈɡwaɬɨ̞s/ˈɡwaɬɪs] = negligent, careless, heedless, slack, remiss
Cornish (Kernewek) gwall = accident, defect, neglect
gwallus = accidental
gwaluster = casualty
Old Breton guoael = bad, wrong
Middle Breton (Brezonec) goall, goual, goal, gual(l) = bad, wrong
Breton (Brezhoneg) gwall [gwal] = bad, wrong, nasty, naughty
gwallus = harmful
gwallvrudañ = to defame
gwallvruder = slanderer
gwallvruderezh = deffamation, slandering
gwallwir = concussion
gwalladenn = rape

Etymology: from the Proto-Indo-European *(h₁)welh₁(bʰ)-,, from *wel- (to deceive) [source].

Words marked with a * are reconstructions.

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Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, eDIL – Electronic Dictionary of the Irish Language, In Dúil Bélrai English – Old Irish glossary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Lexicon Cornu-britannicum: A Dictionary of the Ancient Celtic Language of Cornwall, Dictionaire Favereau, TermOfis, Le dictionnaire diachronique du breton, Etymological Dictionary Of Proto Celtic

Facing Opposition

Words for face and related things in Celtic languages.

Mr. Funny Face

Words marked with a * are reconstructions.

Proto-Celtic *gnūstis = face
Old Irish (Goídelc) gnúis [ɡnuːsʲ] = face
Middle Irish (Gaoidhealg) gnúis = face, countenance, disc (of sun or moon), aspect, kind, form, species
dognúisach = ill-featured, ill-favoured
Irish (Gaeilge) gnúis [ɡn̪ˠuːʃ/ɡɾˠuːʃ] = face, mien, countenance, sour expression, frown, aspect, kind, form
gnúiseach = well-favoured, good-looking.
gnúiseachán = sour-faced person.
gnúisgheal = bright-faced
gnúis-searbh = sour-faced
Scottish Gaelic (Gàidhlig) gnùis [gruːʃ] = face, countenance, visage
gnùis-dhreach = aspect
gnùis-bhrat = veil
samhla-gnùis = smiley ☺️, emoticon
maise-gnùis = cosmetics
ruadhadh-gnùis = blush
Manx (Gaelg) grooish = countenance, visage, aspect
grooish-volley = deceit, deceive
geyre-ghrooishagh = sharp-faced
sharroo-ghrooishagh = vinegar-faced
Middle Welsh (Kymraec) gnis = jaw, chin, countenance, face
Welsh (Cymraeg) gnis [miːl] = jaw, chin, countenance, face
gnisiaf, gnisio = to low, neigh, sigh, pant, groan, grumble
Cornish (Kernewek) greuv = face, front

Etymology: from the Proto-Indo-European *ǵneh₃- (to recognise, know) [source]. Words from the same roots include cognition, cunning, gnome, ignorant, know, noble and uncouth in English [source].

Proto-Celtic *enekʷos = face
Old Irish (Goídelc) enech = face, honour, reputation
Middle Irish (Gaoidhealg) enech, ainech = face, front, opposite, against, in opposition to
enechgris = face-flushing
enechlóg = honour-price
Irish (Gaeilge) oineach = honour, good name, reputation, generosity, hospitality, bounty, favour
oineachúil = generous, good-natured
eineach = face (literary)
eineachlann = ‘honour-price’, proportionate compensation, satisfaction for injury, etc
eineachras = safeguard, protection
Scottish Gaelic (Gàidhlig) eanach [ɛnəx] = honour, praise
Proto-Brythonic *ėnib = face
Old Welsh enep = face
Middle Welsh (Kymraec) wynep, wyneb, vynep = face
wynebiat, wnepiat, wynepiat = surace, facing, behaviour, aspect
wynebion, wynebyon = surface, scum, froth,
Welsh (Cymraeg) wyneb [ˈwɨnɛb / ˈwɨnab] = face, countenance, expression, grimace, surface, area, front, side, honour, respect, status, effrontery, impudence, audacity, cheek
wynebaf, wynebu = to face, look towards, confront, oppose, encourage, support
(g)wynebiad = surace, facing, behaviour, aspect
wynebion = surface, scum, froth, head (of beer), cream
(g)wynebol = honourable, worthy, facial, front, facing, promising, favourable, handsome, beautiful
Old Cornish eneb = face
Middle Cornish (Cernewec) enep, enap = face, countenance, page (of a book)
Cornish (Kernewek) enep = face, surface
enebi = to face, oppose
enebieth = opposition
Old Breton enep = face
Middle Breton (Brezonec) enep = face, resistance, opposition, opposite
Breton (Brezhoneg) eneb [ˈẽːnep] = face, opposite, honour
enebenn [e.ˈneː.bɛn] = upper, front, page
eneberezh = opposition
enebiñ = to oppose

Etymology: from the PIE *h₁enih₃kʷos (face), from animālis (animate, living), from *h₁én (in) and *h₃ókʷs (eye), and okno (window) in Czech [source].

Words from the same roots include eye in English, acs (eye, vision, attention) in Latvian, akis (eye, loop) in Lithuanian [source].

Proto-Celtic *antonos = forehead
Old Irish (Goídelc) étan = brow, forehead
Middle Irish (Gaoidhealg) étan, édan = front, brow, forehead
étanán = frontlet
Irish (Gaeilge) éadan [ˈeːd̪ˠən̪ˠ/ˈeːd̪ˠənˠ] = front, face, flat surface, facet, table, end
éadána = timid, diffident
éadánacht = timidity, diffidence
éadanchlár = fascia
Scottish Gaelic (Gàidhlig) aodann [ɯːdən̪ˠ] = face, front, dial, side
aodannach [ɯːdən̪ˠəx] = little face, mask, frontispiece
aodann-clò = typeface
aodann-coimheach = mask
aodann creige = rockface, cliff-face
Manx (Gaelg) eddin = face, facade, feature, front, apron, dial, impudence, cheek
eddinagh = facial

Etymology: from the Proto-Indo-European *h₂ent- (face, forehead, front). Words from the same roots include answer, end in English, and anë (side, edge, verge, brink) in Albanian [source].

Old Irish (Goídelc) agad [ˈaɣəð] = face, honour, surface
Middle Irish (Gaoidhealg) agad, aiged = face, countenance, surface, front
Irish (Gaeilge) aghaidh [əiɟ/ai/əi̯] = face, front, aspect, dial (of clock), obverse (of coin)
aghaidhbhéasach = civil-looking
aghaidh-dhána = bold-faced
Scottish Gaelic (Gàidhlig) aghaidh [ɤː.ɪ] = face, visage, facade, front, facing, cheek, impudence, nerve
aghaidheachd [ɤː.ɪjəxg] = resistance
aghaidhich = oppose, face, confront, affront
aghaidhichte = opposed, opposing, fronting, facing, confronted
Manx (Gaelg) oai = countenance
oaie = dial, exposure, facade, face, facial, front, frontage
oaieagh = blasphemous, sepulchral

Etymology: uncertain, possibly related to the Old Irish aigid (to drive), from Proto-Celtic *ageti (to drive), from Proto-Indo-European *h₂éǵeti (to be driving) [source].

Proto-Celtic *drikā = face, front
*ɸaredrikā = face, front
Old Irish (Goídelc) drech = face
Middle Irish (Gaoidhealg) drech, dreach = face, countenance, front, surface
drechach = fair, comely, graceful, shapely
Irish (Gaeilge) dreach [dʲɾʲax] = facial appearance, look, expression, aspect, face, surface
dreachadh =delineation, portrayal, make-up
dreachadóir = delineator
dreachúil = good-looking, comely
Scottish Gaelic (Gàidhlig) dreach [drɛx] = figure, form, shape, appearance, complexion
dreachmhor [drɛxvər] = comely, handsome, a healthy complexion
dreachadh [drɛxəɣ] = portraying, shaping, adorning
dreachail [drɛxal] = handsome, personable
dreachalachd [drɛxəl̪ˠəxg] = handsomeness
Manx (Gaelg) dreagh = expression
Middle Welsh (Kymraec) dyrch = face
drychiolaeth = apparition, ghost, spectre, phantom
edrich, edrych = to look, view, observe
Welsh (Cymraeg) drych [drɨːχ / driːχ] = mirror, looking-glass, reflection, example, magnifying-glass, glasses, countenance, appearance, aspect
drachaf, drychu = to mirror, see, make apparent
drychiolaeth = apparition, ghost, spectre, phantom
edrych = regard, appearance
edrych(af) = to look, view, observe, watch, search
Middle Breton (Brezonec) derch = shape, aspect, appearance

Etymology: from Proto-Indo-European *dr̥ḱ-eh₂ from *derḱ- (to see) [source]. Words from the same roots include dragon, drake and tarragon in English [source].

Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, eDIL – Electronic Dictionary of the Irish Language, In Dúil Bélrai English – Old Irish glossary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Lexicon Cornu-britannicum: A Dictionary of the Ancient Celtic Language of Cornwall, Dictionaire Favereau, TermOfis, Le dictionnaire diachronique du breton, Etymological Dictionary Of Proto Celtic

Hiding & Concealment

Words for hide, conceal and related words in Celtic languages.

hiding

Words marked * are reconstructions.

Proto-Celtic *kelo- = to hide
*keleti = to hide, conceal
Old Irish (Goídelc) ceilid = to hide, conceal
Middle Irish (Gaoidhealg) ceilid = to hide, conceal, admit, allow, concede, withhold, hoard, suppress, destroy
ceilt = act of hiding, concealing, suppressing
cel = concealment, dissolution, extinction, death
celt = covering, garment, clothing
celtair = concealment, covering, garment, cloak
Irish (Gaeilge) ceil [kɛlʲ] = to conceal, suppress, withhold
ceileantas = concealment, secrecy
ceileatram = disguise, veneer
ceilt = concealment, withholding, denial
ceilteanas = concealment
Scottish Gaelic (Gàidhlig) ceil [kʲel] = concealment, death (archaic)
ceileadh [kʲeləɣ] =(act of) concealing, hiding
ceilear [kʲelər] = concealer, someone who hides, screener
ceilt [kʲeldʲ] = concealment
ceilte [kʲeldʲə] = concealed, hidden
ceilteach [kʲeldʲəx] = concealing, reserved
Manx (Gaelg) keill = to hide
keiltyn = to coneal, cover (up), disguies, hide, shelter; concealment, dissimulation, suppression
keiltynys = camouflage, furtiveness, hiding
Proto-Brythonic *kelɨd =
Middle Welsh (Kymraec) cêl, cel = hiding, concealment, shelter
kelv, kelu, kely = to hide, conceal
celadwy, keladwy = hidden, concealed, private, secret
keledic = hidden, concealed, secret
Welsh (Cymraeg) cêl [kɛːl/keːl] = hiding, concealment, shelter, bower, hidden, secret
celaf, celu [ˈkɛlɨ̞/ˈkeːli/ˈkɛli] = to hide, conceal, keep secret
celadwy = hidden, concealed, private, secret
celdy = bower, arbour
celedig = hidden, concealed, secret, dissembled
celedigaeth = concealment, secrecy
celedd = secretiveness, caution
datgelaf, datgelu = to reveal, detect, blab, solve
Middle Cornish (Cernewec) celes, celys, kelys = to conceal, hide
Cornish (Kernewek) kel = hidden, secret
keles = to conceal, hide
keles ha kavos = hide-and-seek

Etymology: from the Proto-Indo-European *ḱéleti (to be covering, hiding), from *ḱel- (to cover) [source].

Words from the same roots include words for cell and church in Celtic languages, cell, cellar, clandestine, conceal, hall, hell, helmet and occult in English, and the name William [source].

Words such as Celt and Celtic, and their equivalents in other languages possibly come from the same Proto-Celtic roots, via the French celtique (Celtic), Latin Celtae (the Celts) and the Greek Κελτοί (Keltoí) / Κέλται (Kéltai), which is what Herodotus called the Gauls. They might have originally meant something like ‘descendents of the hidden one (the underworld deity)’, and according to Julius Caesar, the Gauls claimed descent from an underworld god [source].

In Breton, kuzh means secret and confidential, and kuzhat means to hide. They are cognate with the Welsh words cudd (concealment, secrecy) and cuddio (to hide, conceal), and the Cornish words kudh (concealed, hidden, secret) and kudha (to conceal, hide). See the Celtiadur post Mysterious Secrets for more details.

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Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, eDIL – Electronic Dictionary of the Irish Language, In Dúil Bélrai English – Old Irish glossary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Lexicon Cornu-britannicum: A Dictionary of the Ancient Celtic Language of Cornwall, Dictionaire Favereau, TermOfis, Le dictionnaire diachronique du breton, Etymological Dictionary Of Proto Celtic

Sure, Certainly

Words for sure, certain and related words in Celtic languages.

Sure, Certainly

Words marked * are reconstructions.

Proto-Celtic *derwos = firm (as an oak), oak
Old Irish (Goídelc) derb = sure, certain, fixed, certainty
derba = certainty
derbaid = to certify, confirm, prove
derbda = certain, fixed
Middle Irish (Gaoidhealg) derb = sure, certain, fixed, determinate, reliable, genuine
derba = certainty
derbaid = to certify, confirm, prove, attest
derbda(e) = certain, fixed
Irish (Gaeilge) dearbh [ˈdʲaɾˠəvˠ] = sure, certain
dearbhaigh = to declare, affirm, confirm, attest, prove
dearbháil = to test, check
dearbhú = declaration, affirmation, attestation, confirmation
dearfa = attested, proved, sure, certain
dearfach = affrimative, positive
dearfacht = positiveness, certainty
deartháir = brother (“certain brother” from derb & bráthair [brother])
deirfiúr = sister (“certain sister” from derb & siur [sister])
Scottish Gaelic (Gàidhlig) dearbh [dʲɛrɛv] = ceratin, sure, positive
dearbh-aithne = identity, indentification
dearbhaich [dʲɛrɛvɪç] = prove, attest, verify, demonstrate
dearbhadh [dʲɛrɛvəɣ] = proving, attesting, verifying
dearbhachd [dʲɛrɛvəxg] = proof, experience, assurance
dearbhair [dʲɛrɛvɛrʲ] = affirmer, checker
dearbhte [dʲɛrɛvdʲə] = ascertained, confirmed, proved
dearbhach [dʲɛrɛvəx] = sure, affirmative, positive
dearbhachail [dʲɛrɛvəxal] = conclusive, decisive
Manx (Gaelg) jarroo = absolute, actual, even, explicit, express, identical, indubitable
jarrooagh = affirmative, categorical, confirmative, definitive, positive
jarrooid = positiveness
dy jarroo = actually
Old Welsh ceintiru = first cousin (male)
Middle Welsh (Kymraec) keuynderv, keuyndyru, keuynderw = first cousin (male)
cyfnitherw, kefnithderw, cyvnither = first cousin (female)
Welsh (Cymraeg) derw = sure, true (only appears in words below)
cefnder(w) = first cousin (male)
cyfnither(w) = first cousin (female)
Middle Cornish (Cernewec) handeru = first cousin
Cornish (Kernewek) kenderow, keniterow = cousin
Middle Breton (Brezonec) quenderu = cousin
Breton (Brezhoneg) kenderv = cousin (male)
keniterv = cousin (female)

Etymology: from the Proto-Indo-European *drewh₂- (steady, firm), from *dóru (tree), which possibly related to *deru-/*drew- (hard, firm, strong, solid) [source].

Words from the same roots include words for oak trees in Celtic languages, and tar, tree, trough and trim in English [source].

Proto-Celtic *kengeti =to step
Old Irish (Goídelc) cingid [ˈkʲiŋʲɡʲiðʲ] = to step, proceed
do·cing = to advance, step forward
Middle Irish (Gaoidhealg) cingid, cinnid, cinnit = to step, pace, proceed, go, overcome, surpass, excel, exceed
do-cing, to-cing = to step, stride forward, advance, come
Irish (Gaeilge) cinn [cəiɲ / ciːnʲ] = to fix, determine, decree, decide
cinnte = certain, definite, mean, stingy, constant
cinnteach = fixed, definite, definitive
cinnteachaí = determinist
cinnteachas = determinism
cinnteacht = certainty, stinginess, limitation
cinntigh = to make certain, confirm, assure
cinntiú = confirmation, determination
Scottish Gaelic (Gàidhlig) cinnt [kʲĩːn̪ʲdʲ] = certainty
cinnteach = certain, definite, sure, accurate
cinnteachas = determinism
cinnteachd = certainty, actuality, assurance
cinnteachadh = checking, confirming, determining
cinntich = (to) check, confirm, determine, ascertain
Manx (Gaelg) kinjagh = constant, continual, continuous, definite

Etymology: possibly from Proto-Indo-European *(s)keng- (limp) [source].

Words from the same roots include words for step in Celtic languages, shank in English, hinken (to limp, hobble) in Dutch and German [source].

Middle Welsh (Kymraec) dyogel, diogel = safe, secure, certain, sure, reliable, immovable
diogelu = to make save, secure
diogelhay = to make safe or fast, secure, assure
diogelrwydd, diogelrỼyd = safety, security, assurance, certainty
diogelwch = safety, security, caution
diogelwr = defender, protector
Welsh (Cymraeg) diogel [dɪˈɔɡɛl/dɪˈoːɡɛl] = safe, secure, certain, sure, reliable, immovable
diogelaf, diogelu = to make save, secure, assure, confirm
diogeldeb, diolgelder = safety, security
diogelfa = safe place, fortress, stronghold, place of refuge
diogelhaf, diogelhau = to make safe or fast, secure, assure
diogelrwydd = safety, security, assurance, certainty
diogelwch = safety, security, caution
diogelwr, diogelydd = defender, protector
Middle Cornish (Cernewec) diogel, dyowgel, dyogel, diûgel, diougel = unexposed, secure, safe, certain
Cornish (Kernewek) diogel = certain, reliable, secure, sure
diogeldeh = security
diogeli = to safeguard, secure
Middle Breton (Brezonec) diouguel, dioguel, dyougel = certain, sure, surely, security, safety
diouguelhat = to defend, guard, protect
diouguelroez, dyouguelroez = security, protection
Breton (Brezhoneg) diogel [diˈoːɡɛl] = size, dimension, measure, format
diougelaat = to defend, guard, protect
diougeladur = affirmation, assertion
diougeler = protecter
diogeliñ = to assert
diogelroez = security, protection
diogelus = affirmative

Etymology: from di- (intensifying prefix) and gogel (to guard), from Proto-Celtic *uɸo- (sub-, under) and *kelo (to hide), from PIE *ḱel (to cover) [source].

Words from the same roots include Celt(ic), heel and occult in English [source].

Scottish Gaelic (Gàidhlig) sicir [ʃiçgʲɪrʲ] = shrewd, acute, accurate, sure
sicireachd [ʃiçgʲɪrʲəxg] = shrewdness, acuteness, accurateness, sureness
Manx (Gaelg) shickyr = certain, confident, definite, firm
shickyraghey = to ensure, ratify, verify, affirmation
shickyrys = assurance, certainty, security, stability
Middle Welsh (Kymraec) sicr, sikr = safe, secure, certain, sure, reliable, immovable
sickrwydd, sicrwydd, siccrwydd = certainity, sureness, assurance
siwr, sywr = sure, certain, inevitable, unfailing
Welsh (Cymraeg) sicr [ˈsɪkɪr] = sure, certain, inevitable, secure, safe
sicrhau = to ensure, make certain, fasten, secure
sicrwydd = certainity, sureness, assurance
siŵr, siwr [ʃuːr]= sure, certain, inevitable, unfailing
siwr(i)af, siwr(i)o = to assure, ensure
siwrans, siwrens = certainity, assurance
Middle Cornish (Cernewec) secer = secure
secerder = security
Cornish (Kernewek) sur = certain(ly), sure(ly)
surhe = to assure, ensure, insure
surheans = insurance
surneth = certainity
surredi = certainly, surely
Middle Breton (Brezonec) sigur = sure, certain, assured
Breton (Brezhoneg) sygur, sigur [ˈsiːɡyr] = sure, certain, assured
siguriñ = to generalize, pretext

Etymology: from Middle English siker (safe, secure), from Old English sicor (secure, safe, sure), from Proto-West Germanic *sikur (secure, safe, sure, certain), from Latin sēcūrus (worryless; carefree; secure), from sē- (without) and cūra (care); [source].

Note: the Welsh word sikr comes from Middle English siker, while siŵr/siwr comes from modern English sure. They both come from the same ultimate roots. Similarly, the Middle Cornish secer comes from Middle English, while sur in modern Cornish comes from modern English. I’m not sure if the Breton words are related, or what their etymology is.

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Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, eDIL – Electronic Dictionary of the Irish Language, In Dúil Bélrai English – Old Irish glossary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Gerlyvyr Cernewec, Lexicon Cornu-britannicum: A Dictionary of the Ancient Celtic Language of Cornwall, Dictionaire Favereau, TermOfis, Le dictionnaire diachronique du breton, Geriafurch, English – ProtoCeltic WordList (PDF), Etymological Dictionary Of Proto Celtic