Alive & Living

Words for alive & living in Celtic languages.

Proto-Celtic *biwos = alive, living, mortal
Old Irish (Goídelc) béo [bʲeːu̯] = alive, living
Irish (Gaeilge) beo [bʲoː / bʲɔː] = living, alive; live, active; living being; life; livelihood; quick; to live
Scottish Gaelic (Gàidhlig) beò [bjɔː] = alive, live, living; lively; vivid; vital; quick, lively, sprightly
Manx (Gaelg) bio [bʲoː] = alive, live, lifelike, bright, hot, activated, pictorial, afloat, live person, spring tide after neap
Proto-Brythonic *bɨw = alive, living
Welsh (Cymraeg) byw [bɨu̯ / bɪu̯] = alive, living, having life, animate, quick, existing, actual; lively, full of life, vivacious, vigorous, sprightly, spirited, eager, sparkling; vivid, graphic; susceptible to
byw (verb) = to live, lead one’s life, subsist, exist; dwell, inhabit, to animate, revive
Cornish (Kernewek) bew [beˑʊ] = active, agile, alive, lively, living,
switched on
bewa = to live, be alive
Breton (Brezhoneg) bev = alive, living, lively
bevañ = to live, feed

Etymology: from Proto-Indo-European *gʷih₃wós (alive, living) [source].

Old Irish (Goídelc) forig, fuirset = to remain, stay
Irish (Gaeilge) fuirigh = to hold back, delay, wait, stay
Scottish Gaelic (Gàidhlig) fuirich [fuɾʲɪç] = to stay, wait, delay, linger, abide
Manx (Gaelg) fariagh [bʲoː] = to stay
Old Irish (Goídelc) cómnuigim = I rest
congaib [konˈɡavʲ] = to contain, preserve, keep, uphold
Middle Irish (Gaoidhealg) cómnuigim = I rest
congaib [konˈɡavʲ] = to contain, preserve, keep, uphold
Irish (Gaeilge) cónaigh [ˈkoːn̪ˠɪɟ / ˈkoːnˠə / ˈkɔːnˠi] = living, alive; live, active; living being; life; livelihood; quick; to live
Scottish Gaelic (Gàidhlig) cumail [kumal] = (act of) keeping, holding, retaining; witholding; celebrating, observing
còmhnaidh [kɔ̃ːnɪ] = (act of) occupying, inhabiting, dwelling, residing; occupancy, occupation, habitation, residence; (act of) abiding; abode
Manx (Gaelg) cummal = to grip, hold, keep, arrest, contain, retain, live, inhabit

Etymology: from the Old Irish com- (with) and gaibid (to hold, grasp, take, seize, capture) [source].

Old Irish (Goídelc) maraid [ˈma.rəðʲ] = to last, persist, remain; to survive, live
Irish (Gaeilge) mair = to live, to last
Scottish Gaelic (Gàidhlig) mair [marʲ] = to live, to exist, to continue

Etymology: from Proto-Indo-European *merh₂- (to seize, grip) [source].

Welsh (Cymraeg) trigio = to live (in), dwell, reside, lodge, stay, remain, delay, linger
godrig(af) = to stay, tarry, remain, abide, dwell, sojourn; stay or tarry for; rest upon, insist; linger, delay.
Middle Cornish trege, trega, tryga, tryge = to remain, stay, dwell
Cornish (Kernewek) triga = to remain, stay, dwell
Old Breton guotric = to stay

Etymology: from Latin trīcō (to delay) [source].

The word for to live in Breton, chom, comes from the Old French chômer (to be idle, to be out of work), from the Late Latin caumāre, from caumō (I rest during the heat), from the Ancient Greek καῦμα (kaûma – heat). [source].

Words marked with a * are reconstructions.

Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau

Life

Words for life and related things in Celtic languages

Words marked with a * are reconstructions.

Proto-Celtic *biwotūts = life
Old Irish (Goídelc) betha = life, lifetime, existence, sustenance
bethamnas = life, livelihood
ar·beir = to live
Middle Irish (Gaoidhealg) betha = life, to be alive; living, livelihood; food sustenance, property, estate
bethadach = animal, creature
bethaigid = to quicken, animate, feed, nourish, support
bethamain = nourishment
uisce beatha(d), uisge beatha = whiskey
Irish (Gaeilge) beatha [ˈbʲahə] = life, to be alive; living, livelihood; food sustenance, property, estate
beathachruth = life form
beathaigh = to feed, nourish, rear
beathaithe = fat, well-fed
beathú = feeding, nourishment, living, culture
beathúil = nourishing
uisce-beatha = whiskey
Scottish Gaelic (Gàidhlig) beatha [bɛhə] = life, existence; victuals, food; livelihood; welcome, salutation
beathach [bɛhəx] = animal, beast, head of cattle, brute
beathachadh [bɛhəxəɣ] = living, feeding, nourishing
beathachail [bɛhəxal] = nutritious, nutritional
beathachair [bɛhəxɛrʲ] = animator
beathadach [bɛhədəx] = animate
beathalachd [bɛhəl̪ˠəxg] = liveliness, vitality
uisge-beatha [ɯʃgʲəˈbɛhə] = whisky
Manx (Gaelg) bea = animation, life, lifespan, vital (statistics)
beaoil = moral, living
beaghee = nutritious, edible
beaghey = to feed, nourish, nurture, live, maintain; nourishment, foodstuffs, livelihood, nutrition, sustenance
ushtey bea = whiskey
Proto-Brythonic *bïwïd = life
Middle Welsh (Kymraec) byỽyt, bywyt, bowyt, bowyd= life, existence; liveliness; lifetime, living, livelihood, sustenance
Welsh (Cymraeg) bywyd [ˈbəu̯ɨ̞d/ˈbou̯ɪd] = life, existence; liveliness; lifetime, living, livelihood, sustenance; wealth, income; reward, gift
bywydaf, bywydu = to animate, quicken
bywydol = living, animate, lively, vital
bywydoldeb = life, animation, vitality
bywydus = full of life, lively, vigorous
Middle Cornish (Cernewec) bewnans, bewnas = life, existence
Cornish (Kernewek) bewnans [‘bɛʊnans] = life, living
Middle Breton (Brezonec) buez, buhez = life, to live
Breton (Brezhoneg) buhez [ˈbyːe(z)] = life
buhezegezh = vitality, morals, ethics
buhezek = vital, full of vitality

Etymology: from the Proto-Celtic *biwos (alive, living, mortal), from Proto-Indo-European *gʷih₃wós (alive, living). Words from the same roots include words for food in Celtic languages, biology, quick, vitality and zoo in English, vida (life) in Spanish, and vie (life) in French [source].

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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

To Do & To Make

The verb to do & to make in Celtic languages.

Proto-Celtic *gniyeti = to make, to do
Old Irish (Goídelc) dénai = to do
gníid [ɡʲnʲiː.iðʲ] = to do
Irish (Gaeilge) déan [dʲeːnˠ] = to do, to make
Scottish Gaelic (Gàidhlig) dèan [ʲian] = to do, to make, to act, to work, to perform
Manx (Gaelg) jean = to do, to make
Welsh (Cymraeg) geni [ˈɡɛnɪ / ˈɡeːni] = to be born, give birth to, bring forth; beget, produce

Etymology: from Proto-Indo-European *werǵ- (to make) [source].

Words marked with a * are reconstructions.

Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, Geiriadur Prifysgol Cymru

Proto-Celtic *wregeti = to make, to do
Old Irish fairged = to make, to do
Middle Welsh (Kymraec) gwneuthur = to make, to do
Welsh (Cymraeg) gwneud [ɡwneɨ̯d / ɡwnei̯d] = to make, create, fashion, compose, construct, found, establish, pitch (a tent)
Cornish (Kernewek) gul [gy:l / gi:l ] = to do, to create, to make
Old Breton oper = to do, to make
Breton (Brezhoneg) ober = to do, to make

Etymology: from Proto-Indo-European *werǵ- (to make), which is also the root of the English words work and wrought [source].

Words marked with a * are reconstructions.

Sources: Wiktionary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau

To Be

The verb to be in Celtic languages.

Proto-Celtic *butā = to be
Old Irish (Goídelc) both = to be
Irish (Gaeilge) = to be, to exist
Scottish Gaelic (Gàidhlig) [bi] = to be, to exist
Manx (Gaelg) ve = to be
Welsh (Cymraeg) bod [boːd] = to be
Cornish (Kernewek) boz [bɔ:z] = to be, to become, to exist
Breton (Brezhoneg) bezañ = to be

Note: this verb is irregular in all the Celtic languages, and some of the different conjugations come from different roots.

Etymology: from Proto-Indo-European *bʰuh₂- (to become, grow, appear) [source].

Words marked with a * are reconstructions.

Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau

Elbows

Words for elbow in Celtic languages.

Eoin Dillon & Frank Tate

Proto-Celtic *olīnā = elbow, angle, corner
Old Irish (Goídelc) uilen = elbow, forearm; angle, corner
uilnech = angled, cornered, squared-off
Middle Irish (Gaoidhealg) uilen, uille, uile, uilenn, uillenn = elbow, forearm; angle, corner
uillennach = having angles, angular
uilnech, uillech = having elbows, angles, corners
Irish (Gaeilge) uillinn = elbow, angle
uillinntomhas = protractor
uilleannach = having prominent elbows, elbowing, nudging
uilleach = angular
uilleachas = angularity
Scottish Gaelic (Gàidhlig) uileann [ulən̪ˠ] = elbow, angle
ceart-uileann = right angle
uileann tilgidh = trajectory
Manx (Gaelg) uillin = elbow, elbow joint, crook, angle, corner, nudge
uilliney = elbow
uillinaghey = to elbow, jostle
Old Welsh elin = elbow, forearm
Middle Welsh (Kymraec) elin, elyn = elbow, forearm
elin(i)oc = elbow-shaped, angular
penn y elined, penn (yr) elin = elbow, bend
Welsh (Cymraeg) elin [ˈɛlɪn / ˈeːlɪn] = elbow, forearm; angle, bend
elinaf, elino = to elbow, jostle, project, jut out
elin(i)og = elbow-shaped, angular, having arms (of chair)
penelin, pen elin = elbow, bend, projection, corner
Middle Cornish (CerneweC) elin, elyn = angle, elbow
Cornish (Kernewek) elin [‘ɛlɪn] = elbow, angle
elin pedrek = right angle
Middle Breton (Brezonec) elin, ilin = elbow, bend
elinar, elinat, ilinad = bent, angled
Breton (Brezhoneg) ilin [ˈiːlin] = elbow, bend
ilinad = bent, angled
ilinañ = to lean
ilinata = to elbow, jostle
ilinañ = to lean
iliner = armrest
ilinwisk = elbow pad/brace/support

Etymology: from Proto-Indo-European *Heh₃l- (to bend). Cognate with the Latin ulna (elbow, arm), and the English elbow and ulna (one of the bones in the forearm, a.k.a. elbow bone) [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, Dictionaire Favereau, TermOfis, English – ProtoCeltic WordList (PDF), Etymological Dictionary Of Proto Celtic

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Shoulders

Words for shoulder and related things in Celtic languages.

Shouldered

Words marked with a * are reconstructions.

Old Irish (Goídelc) gúala = shoulder
Middle Irish gúala, gualann, gūaluinn = shoulder
gúaillech = shouldered, branched, branching
gúaillid = companion, comrade
gúalaire = load, burden
Irish (Gaeilge) gualainn [ˈɡuˑəl̪ˠənʲ] = shoulder
guailleadóireacht = (act of) shouldering, swaggering
guailleáil = to shoulder, to jostle with shoulder, to lurch with shoulders, to saunter, to swagger
guailleálaí = shoulderer, lurcher, saunterer, swaggerer
guailleán = shoulder-strap, braces
guailleog = epaulet(te)
guaillí = companion
guaillíocht = companionship
Scottish Gaelic (Gàidhlig) guaille [guəl̪ˠə] = shoulder
guailleach [guəl̪ˠəx] = pertaining to shoulders
guailleachan / guailleag [guəl̪ʲəxan / guəl̪ʲag] = shoulder-mantle, shawl
gualann [guəl̪ˠən̪ˠ] = shoulder, corner of a house, tack (nautical), brow (geography), shoulder (of mutton), shaft (of a cart), curve of a (ship’s) bow
Manx (Gaelg) geaylin = shoulder, corner (of house)
geayliney = shoulder
geaylinagh = shouldered
geaylaig = epaulette

Etymology: from Proto-Indo-European *gew- (to bend, curve, arch, vault) [source]. Words from the same roots include cuttlefish, gown, kidney, chitterling and gyration in English, Kuhle (hollow, depression) in German, kiel (keel) in Dutch, gonna (skirt) in Italian, and keula (bow, prow) in Finnish [source].

Proto-Celtic *skēdos = wing, shoulder
Old Irish (Goídelc) scíath = wing
Middle Irish scíath = wing
scíathán, sgíthéan, sgiathán = wing
scíathánach = winged
Irish (Gaeilge) sciathán [sˠciəˈhɑ̃ːn̪ˠ] = wing, side, extension, part, piece, arm
sciathánach = winged, long-armed
An tOileán Sciathánach = Isle of Skye
Scottish Gaelic (Gàidhlig) sgiath [sgʲiə] =wing, fin
sgiathan [sgʲiahan] = small wing
sgiathach [sgʲiəhəx] = pertaining to shoulders
sgiathadaich [sgʲiəhədɪç] = fluttering
sgiathadh [sgʲiəhəɣ] = (act of) flying
sgiathag [sgʲiəhag] = little wing
sgiathaire [sgʲiə.ɪrʲə] = winger (in sports)
An t-Eilean Sgitheanach = Isle of Skye
Manx (Gaelg) skian [skʲiən] = wing, pinion, mudguard, baffle
skianagh = winged, finned, pinioned, winged creature
Ellan Skianagh = Isle of Skye
Proto-Brythonic *skuïð = shoulder
Old Welsh (Kembraec) iscuid = shoulder
Middle Welsh (Kymraec) ysgwyt, ysgwyd, ysgỽyd = shoulder
ysgwydawc, yscwyddoc, ysgwyddoc = shoulder(-blade), (upper part of) arm, shoulder (meat), having shoulders
Welsh (Cymraeg) ysgwydd [ˈəsɡwɨ̞ð / ˈəsɡʊi̯ð] = shoulder
ysgwyddo = to shoulder, push with the shoulder(s), hustle, jostle, support, shrug
ysgwyddiad = standing out, jutting out, projection, protusion, cornice
ysgwyddog = shoulder(-blade), (upper part of) arm, shoulder (meat), having shoulders
ysgwyddol = scapular, like a shoulder in shape
Old Cornish scuid =shoulder
Middle Cornish (Cernewec / Kernuak) scuid, scudh, scoudh, scôdh, scûdh = shoulder
scuidlien = a hood
Cornish (Kernewek) skoodh [sko:ð / sku:ð] = shoulder
skoodhya = to assist, back, help, second, support
skoodhyans = assistance, help, support
skoodhyer = assistant, exponent, fan, supporter
Middle Breton (Brezonec) scoaz = shoulder
Breton (Brezhoneg) skoaz [ˈskwɑː(s)] = shoulder, help
skoazek = (person) with broad shoulders, killer whale
skoazell [ˈskwɑː.(z)ɛl] = help, assistance
skoazellañ [skwa.ˈ(z)ɛ.lːã] = to help, to rescue, to subsidize
skoazeller = assistant, helper, auxiliary
skoaziañ [ˈskwa(z)jã] = to support, to help, to assist

Etymology: unkown, possibly from Proto-Indo-European *skeyd- (to split, divide) [source].

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Sources: Wiktionary, Etymological Dictionary Of Proto Celtic, In Dúil Bélrai English – Old Irish glossary, eDIL – Electronic Dictionary of the Irish Language, Teanglann.ie, Am Faclair Beag, An etymological dictionary of the Gaelic language, Fockleyreen: Manx – English Dictionary, Online Manx Dictionary, Gaelg Corpus, Geiriadur Prifysgol Cymru, Lexicon cornu-britannicum : a dictionary of the ancient Celtic language of Cornwall, Gerlyver Kernewek, Devri : Le dictionaire diachronique du breton, Geriafurch, TermOfis




Eyes & Sun

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

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Proto-Celtic *sūle = suns, dual of *sūlos, genitive of *sāwol = sun
Primitive Irish *sūli = eye
Old Irish (Goídelc) súil [suːlʲ] = eye, hope, expectation
Irish (Gaeilge) súil [sˠuːlʲ / sˠuːl] = eye; expectation, hope; something resembling or suggesting an eye
Scottish Gaelic (Gàidhlig) sùil [suːl] = eye; glance, look; expectation; fancy, notion; opening; (rope) eye
Manx (Gaelg) sooill [suːlʲ] = eye, eyepiece, ocellus, sheath of bud, hole of strap
Welsh (Cymraeg) haul [haɨ̯l / hai̯l] = sun, sunlight
heulo = to shine, be sunny, expose to the sun, air (clothes), display
heulog = sunny, solar, cheerful, smiling
torheulo, bolaheulo = to sunbathe
Middle Cornish houl = sun
Cornish (Kernewek) howl [hɔʊl] = sun
howldrevel = sunrise, east
howllen = parasol
howlleski = to tan
howlleskys = sunburnt, tan
howllosk = sunburn
howlsedhes = sunset, west
Breton (Brezhoneg) heol = sun, sunny place, censer

Etymology: from Proto-Indo-European *sóh₂wl̥. (sun) [source].

Proto-Celtic *sawenos = sun
Middle Welsh (Kymraec) haun, hvun = sun, sunlight, sunshine
Welsh (Cymraeg) haun [ˈhɨ.an / ˈhiː.an] = sun, sunlight, sunshine, bright, radiant, sunny
Breton (Brezhoneg) huon = sun

Etymology: from the Proto-Indo-European *sh̥₂uén, from *sóh₂wl̥ (sun) [source].

Proto-Celtic *lukato- = eye
Proto-Brythonic *lugad = eye
Welsh (Cymraeg) llygad [ˈɬəɡad] = eye; iris of the eye; region around the eye; look, gaze; sight, vision; viewpoint
Cornish (Kernewek) lagas [‘lagas / lægɐz] = eye
Breton (Brezhoneg) lagad [ˈla.ɡat] = eye, look, light, eyelet, sleeve, mesh

Etymology: from Proto-Indo-European *lewk- (to shine) [source].

Words marked with a * are reconstructions.

Proto-Celtic *grēnā / *gʷrensnā = sun
Old Irish (Goídelc) grian [ɡʲrʲiːa̯n] = sun
Irish (Gaeilge) grian [ˈgɾʲiənˠ] = sun; paragon
grianach = sunny, cheerful, pleasant
grianadh = sunning, basking
grianán = sunny upper room , solar; person of sunny disposition, loved one, darling
grianbhuí = mellow, golden, sunlight
grianchlog = sundial
grianchóras = solar system
Scottish Gaelic (Gàidhlig) grian [grʲian] = sun
grainach [grʲianəx] = sunny
grainan = sunny spot; place for drying (esp. peat); sundog, mock sun (parhelion)
grian-stad = solstice
Manx (Gaelg) grian [ɡriːn / ɡriᵈn] = sun, sunlight, sunshine
grian-vroit = sunbaked

Etymology: possibly from Proto-Indo-European *gʷʰer- (to be warm, hot) [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, Gerlyvyr Cernewec, Dictionaire Favereau, TermOfis, Le dictionnaire diachronique du breton, Geriafurch, English – ProtoCeltic WordList (PDF), Etymological Dictionary Of Proto Celtic

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Cheeks

Words for cheek in Celtic languages.

Scottish Gaelic (Gàidhlig) bòc [bɔːxg] = bloat, inflate, puff; rise, surge, swell
Welsh (Cymraeg) boch [boːχ] = cheek, jaw, mouth
Cornish (Kernewek) bogh [bɔ:x / boːʰ] = cheek
Breton (Brezhoneg) boc’h [pɛ̃n] = cheek

Etymology: from Latin bucca (cheek, mouth) [source].

Words marked with a * are reconstructions.

Irish (Gaeilge) leiceann = cheek, side-face
Scottish Gaelic (Gàidhlig) lethcheann [l̪ʲeçən̪ˠ] = side of the head, temple, cheek
Manx (Gaelg) lieckan = cheek, side-face, profile, banging post

Sources: Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau

Noses & Nostrils

Words for nose and nostril in Celtic languages.

Proto-Celtic *srognā = nose
Gaulish *srognā = nose, nostril
Old Irish (Goídelc) srón [sroːn] = nose, nostril
Irish (Gaeilge) srón [sˠɾˠoːnˠ] = nose; sense of smell; prow, projection
Scottish Gaelic (Gàidhlig) sròn [sdrɔːn] = nose, snout, trunk; promontory; snout (of a glacier); toe (of a shoe)
Manx (Gaelg) stroin [strɛin] = nose, promontory, headland, ness, naze, nose-piece
Proto-Brythonic *froɨn = nose
Middle Welsh (Kymraec) ffroen = nostril
Welsh (Cymraeg) ffroen = nostril; muzzle of a gun, mouth of a cannon, nozzle of a pair of bellows; hole, entrance, opening (of a pipe), cock, spout
Cornish (Kernewek) frig [fri:g] = nostril
Old Breton fron = nostril
Middle Breton froan / fron = nostril
Breton (Brezhoneg) froen = nostril
fri = nose

Etymology: from Proto-Indo-European *sregʰ- (snore), from *welH- (to turn, to wind) [source].

Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau

Gaulish *trugnā = nose
Welsh (Cymraeg) trwyn [truːɨ̯n / trʊi̯n] = nose, snout; sense of smell
Old Cornish trein = nose
Cornish (Kernewek) tron [tro:n] = nose, point (of land), snout, tunnel
Breton (Brezhoneg) stroen = dirt, snot

Sources: Wiktionary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek

Words marked with a * are reconstructions.

Hair

Words for hair in Celtic languages.

Proto-Celtic *woltos = hair
Old Irish (Goídelc) folt [fol͈t] = hair
Irish (Gaeilge) folt = hair, locks, tresses
Scottish Gaelic (Gàidhlig) falt [fal̪ˠd] = hair, locks, ringlets, tail
Manx (Gaelg) folt [folt̪] = hair
Proto-Brythonic *gwolt = hair
Welsh (Cymraeg) gwallt [ɡwaːɬt / ɡwaɬt] = hair
Old Cornish gols = hair
Cornish (Kernewek) gols [gɔlz] = hair
Old Breton guolt = hair

Etymology: from Proto-Indo-European *woltos (hair), from *welH- (to turn, to wind) [source].

Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau

Old Irish (Goídelc) grúac = hair
Irish (Gaeilge) gruaig [ɡɾˠuəɟ] = hair (mass), locks (of hair)
Scottish Gaelic (Gàidhlig) gruag [gruəg] = hair (esp. of female), wig, head of hair, lock of hair
Manx (Gaelg) gruag = hair

Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie

Welsh (Cymraeg) blew = hair, hairs, bristles, fur; small fish bones; blade of grass
Old Cornish bleu = hair
Cornish (Kernewek) blew [blɛˑʊ] = hair
Old Breton bleuou = hair
Breton (Brezhoneg) blev = hair, bristles, fish bones

The words most commonly used for hair are: gruaig (Irish), falt (Scottish Gaelic), folt (Manx), gwallt (Welsh), gols (Cornish), blev (Breton).

Words marked with a * are reconstructions.

Sources: Wiktionary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau