Starlings

Words for starling (sturnus vulgaris) in Celtic languages.

Proto-Celtic *trozdis = starling
Old Irish (Goídelc) truit = starling
Middle Irish (Gaoidhealg) truit = starling
Irish (Gaeilge) druid [d̪ˠɾˠɪdʲ] = starling
Scottish Gaelic (Gàidhlig) druid [drɯdʲ] = starling, thrush
Manx (Gaelg) truitlag = starling
Middle Welsh (Kymraec) trydw, drydwen, drudwy, drydw, drudw = starling
Welsh (Cymraeg) drudw [ˈdrɨ̞dʊ/ˈdrɪdʊ], drudwy, drydwy, drydw = starling, stare
Old Cornish troet = starling
Cornish (Kernewek) trojen = starling
Middle Breton (Brezonec) tret = starling
Breton (Brezhoneg) tred [ˈtʁeːt], tridig = starling

Etymology: from the Proto-Indo-European *trosdos (thrush) [source].

Words marked with a * are reconstructions.

Starlings

Sources: Wiktionary, Am Faclair Beag, MacBain’s Dictionary, In Dúil Bélrai English – Old-Irish Glossary, teanglann.ie, On-Line Manx Dictionary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau

Herons

Words for heron and related creatures in Celtic languages.

Heron

Words marked with a * are reconstructions.

Proto-Celtic *korxsā / *korxsiyos = heron
Celtiberian *cárcia = heron
Gaulish curcio- = heron
Old Irish (Goídelc) corr = crane, heron, stork, crane
Middle Irish (Gaoidhealg) corr = (grey) heron, stork, crane, leg-necked person
Irish (Gaeilge) corr [kəuɾˠ] = (grey) heron, stork, crane, leg-necked person
Scottish Gaelic (Gàidhlig) corra [kɔr̪ˠə] = heron, stork, crane
Manx (Gaelg) coar = heron, stork, crane
Proto-Brythonic *krɨxɨð = heron
Middle Welsh (Kymraec) crychyd, krechydd, crechydd = heron
Welsh (Cymraeg) crychydd [ˈkrəχɨ̞ð / ˈkrəχɪð] = heron
Old Cornish cherhit = heron
Middle Cornish (Cernewec) cerhidh = heron
Cornish (Kernewek) kerghydh = heron
Old Breton corcid = heron
Middle Breton (Brezonec) quercheiz, querch-eïz, querc’heiz, qarc’hleyz kerc’heiz = heron
Breton (Brezhoneg) kercʼheiz [kɛrˈɣɛjs] = heron

Etymology: possibly immitative in origin. Words for heron in Spanish (garza) and Portuguese (garça) come from the Celtiberian root [source].

Gaulish crehyr = heron
Proto-Brythonic *krexVr = heron
Middle Welsh (Kymraec) crehyr, creir, cr(e)yr = heron
Welsh (Cymraeg) crëyr [ˈkrɛ.ɨ̞r / kreː.ɪr] = heron
Middle Breton (Brezonec) querhair = heron

Etymology: possibly from the Proto-Indo-European *(s)ḱrey- (to scream, screech) [source].

Proto-Celtic *garanos = crane
Gaulish garanus = crane
Proto-Brythonic *garan = crane, heron
Middle Welsh (Kymraec) caran, garan = crane, heron
Welsh (Cymraeg) garan [ˈɡaran] = crane, heron
Old Cornish garan = crane
Middle Cornish (Cernewec) garan = crane
Cornish (Kernewek) garan = crane
Old Breton (Brethonoc) garan = crane
Middle Breton (Brezonec) garan = crane
Breton (Brezhoneg) garan [ˈɡɑː.rãn] = crane (bird, tool), groove, gallery
garanadur = grooving
garanan = to groove

Etymology: from Proto-Indo-European *gérh₂n-o-s, from *gerh₂- (crane, to cry hoarsely) [source]. Words from the same roots include crack, croon, crow and possibly grouse in English, kraai (crow) in Dutch, Krähe (crow) in German [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, Dictionaire Favereau, TermOfis

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Pigeons and Doves

Words for pigeon and doves in Celtic languages.

Old Irish (Goídelc) columb [ˈkolumb] = dove
colmán = wood-pigeon, ring-dove
Middle Irish (Gaoidhealg) colum [ˈkolumb] = dove
Irish (Gaeilge) colm [ˈkɔl̪ˠəmˠ / ˈkʌl̪ˠəmˠ] = dove, pigeon
colmán = (little) dove, pigeon
Scottish Gaelic (Gàidhlig) calman [kal̪ˠaman] = dove, pigeon
colman [kɔl̪ˠɔman] = dove, pigeon
Manx (Gaelg) calmane / colmane = pigeon, dove
Welsh (Cymraeg) colomen / clomen = dove, pigeon, culver; symbol of peace
Old Cornish colom = dove, pigeon
Middle Cornish colomen = dove, pigeon
Cornish (Kernewek) kolom = dove, pigeon
Breton (Brezhoneg) koulm / koulom = dove

Etymology: from the Latin columbus (dove, pigeon), from Ancient Greek κόλυμβος (kólumbos – a diver), from κολυμβάω (kolumbáō – dive, plunge headlong, swim) [source].

Breton (Brezhoneg) pichon = pigeon

Etymology: unknown

Words marked with a * are reconstructions.

Our Doves

Here’s a tune I wrote called The Curious Pigeon / Y Colomen Chwilfrydig:

Sources: Wiktionary, Am Faclair Beag, MacBain’s Dictionary, In Dúil Bélrai English – Old-Irish Glossary, teanglann.ie, On-Line Manx Dictionary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau

Hens & Chickens

Words for hen, chicken and related things in Celtic languages:

Hens

Proto-Celtic *kerkā = hen
Old Irish (Goídelc) cerc [kʲerk] = hen, female bird
Middle Irish (Gaoidhealg) cerc [kʲerk] = hen, female bird
Irish (Gaeilge) cearc [kaɾˠk] = hen, female bird
cearcach = gallinaceous (relating to, or resembling the domestic fowl)
Scottish Gaelic (Gàidhlig) cearc [kʲɛrxg] = hen, chicken; poultry; female crab or lobster
cearc-uisge = moorhen
cearc-Fhrangach = turkey
cearc-fhraoich = female red grouse, moorhen
cearcach = of, or belonging to a hen or hens
Manx (Gaelg) kiark = fowl, hen, hen bird, female bird
kiark

Etymology: from the Proto-Indo-European *ḱer- (to grow, nourish) [source]. These words are possibly related to words for heron and crane in Celtic languages.

English words from the same root include cereal, create, increase, creature, crew and crescent [source].

Proto-Celtic *yarā = chicken
Gaulish Iaros = personal name
Old Irish (Goídelc) eirín = pullet, young hen
Middle Irish (Gaoidhealg) eréne, éirín(e) = chicken, chick, pullet
Irish (Gaeilge) eireog = pullet, chicken; young girl, tiny woman
Scottish Gaelic (Gàidhlig) eireag [erʲag] = pullet, young chick(en) (between 8 months and 1 year old)
Manx (Gaelg) earrag = pullet, poult
Old Welsh iar = hen
Middle Welsh (Kymraec) yar = hen
yeyr, yeir = domestic fowls, chickens
yares = flock of chichens
ieirdy = hen-house, hen-coop
Welsh (Cymraeg) iâr [jaːr] = hen, hen-bird
ieir = domestic fowls, chickens
iarbren = perch for hens, hen-roost
iardy, ieirdy = hen-house, hen-coop
iares = flock of chichens
iargyw = chichen, young fowl
ieirwr = poulterer
Middle Cornish (Cernewec) iar, yar = hen, female bird
Cornish (Kernewek) yar = chicken, hen
yar frankres = free-range hen
yar gowellys = battery hen
yar Gyni = turkey
bregh/brygh yar = chicken pox
yarji = chichen coop, hen house
Middle Breton (Brezonec) yar, iar = chicken, hen
Breton (Brezhoneg) yar = chicken, hen

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, Gerlyvyr Cernewec, Dictionaire Favereau, TermOfis, Le dictionnaire diachronique du breton, Geriafurch, English – ProtoCeltic WordList (PDF), Etymological Dictionary Of Proto Celtic

Hound Dogs

Words for dog in Celtic languages.

Proto-Celtic *kū = dog, wolf
Gaulish cuna = dog
Primitive Irish ᚉᚒᚅᚐ (cuna) = hound, wolf
Old Irish (Goídelc) [kuː] = dog
Irish (Gaeilge) [kuː] = dog, hound, greyhound; wolf; hero, champion
Scottish Gaelic (Gàidhlig) [kuː] = dog, canine
Manx (Gaelg) coo [kuː] = dog, cur, hound, wolf-dog
Proto-Brythonic ki [kiː] = dog
Middle Welsh (Kymraec) ci / ki = dog
Welsh (Cymraeg) ci [kiː] = dog, hound, cur
Old Cornish ci = dog
Cornish (Kernewek) ki [kiː] = dog
Middle Breton ci / qui = dog
Breton (Brezhoneg) ki [kiː] = dog

Etymology: from the Proto-Indo-European *ḱwṓ (dog), which is also the root of the English words hound and canine [source].

Old Irish (Goídelc) madrad, matrad = dog
Middle Irish (Gaoidhealg) matad = common dog, cur
Irish (Gaeilge) madra [ˈmˠad̪ˠɾˠə] / madadh [ˈmˠad̪ˠə / ˈmˠad̪ˠu] = dog, cur
Scottish Gaelic (Gàidhlig) madadh [madəɣ] = dog, mastiff
Manx (Gaelg) moddey [ˈmɔːðə] = dog, tyke
Welsh (Cymraeg) madyn / madog = fox

Etymology: unknown

Old Irish (Goídelc) gagar [ɡaɣər] = beagle, hunting dog
Middle Irish (Gaoidhealg) gadar = beagle, hunting dog
Irish (Gaeilge) gadhar [ɡəiɾˠ] = (hunting) dog, harrier, beagle, cur
Scottish Gaelic (Gàidhlig) gadhar [gɤ.ər] = lurcher, mastiff, greyhound

Etymology: from the Old Norse gagarr [source].

Proto-Celtic *kulēnos = whelp
Old Irish (Goídelc) cuilén [ˈkulʲeːn] = puppy, cub, kitten
Irish (Gaeilge) coiléan [kɪˈlʲaːn̪ˠ] = pup, cub, whelp; youth, scion; trickster
Scottish Gaelic (Gàidhlig) cuilean [kulan] = puppy, whelp; cub; seal pup; darling, dear; short/small bone
Manx (Gaelg) quallian = puppy
Welsh (Cymraeg) colwyn [kiː] = whelp, puppy, cub; lap-dog; spaniel
Old Cornish coloin = puppy
Cornish (Kernewek) kolen [ˈkɔlɪn] = puppy, cub
Breton (Brezhoneg) kolen = puppy, fawn, rabbit

Etymology: unknown

Old Irish (Goídelc) cana [ˈkana] = cub, puppy
Middle Irish (Gaoidhealg) cana [ˈkana] = cub, puppy
Irish (Gaeilge) cana [ˈkanˠə] = cub, whelp; bardic poet of fourth order
Scottish Gaelic (Gàidhlig) cana [kanə] = puppy, whelp
Welsh (Cymraeg) cenau / cenaw = cub, whelp, puppy, kitten; son, descendant, scion, young warrior; knave, imp, rascal; catkin, cat’s tail

Etymology: possibly from the Latin canis (dog), from the Proto-Indo-European *ḱwṓ (dog) [source], or from the Proto-Celtic *kanawo (young animal).

Words marked with a * are reconstructions.

Sources: Wiktionary, Am Faclair Beag, MacBain’s Dictionary, In Dúil Bélrai English – Old-Irish Glossary, teanglann.ie, On-Line Manx Dictionary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau

Irish Wolfhounds

Foxes

Words for fox in Celtic languages.

Old Irish (Goídelc) sinnach / sindach = fox
Irish (Gaeilge) sionnach [ˈʃɪn̪ˠəx / ʃɪˈn̪ˠɑx / ˈʃɪn̪ˠax] = fox
Scottish Gaelic (Gàidhlig) sionnach [ˈʃun̪ˠəx] / seannach [ˈʃan̪ˠəx] = fox, bagpipe reed
Manx (Gaelg) shynnagh = fox

Etymology: unknown

Irish (Gaeilge) madra rua [madəɣ ‘r̪ˠuəɣ] = fox, red fox
Scottish Gaelic (Gàidhlig) madadh-ruadh [madəɣ ‘r̪ˠuəɣ] = fox, red fox

Etymology: from the Old Irish madrad (dog) and the rúad (red) [source].

Scottish Gaelic (Gàidhlig) balgair [bal̪ˠagɛrʲ] = fox

Etymology: unknown.

Proto-Celtic *loɸernos = fox
Gaulish *louernos = fox
Old Irish (Goídelc) loarn = fox
Proto-Brythonic llowern = fox
Old Welsh louern = fox
Middle Welsh (Kymraec) llewyrn = fox
Welsh (Cymraeg) llewyrn = foxes
Old Cornish louuern = fox
Cornish (Kernewek) lowarn = fox
Old Breton louuern = fox
Middle Breton louarn = fox
Breton (Brezhoneg) louarn [ˈluː.aʁn] / luhern = fox

Etymology: from Proto-Indo-European *h₂wlop- (fox) [source].

Welsh (Cymraeg) llwynog [ˈɬʊɨ̯nɔɡ] = fox, a cunning, craft or willy person, bundle
llwynoges = vixen, female fox
llwynogyn = little fox

Etymology: from llwyn (bush, shrub, brake, thicket, copse, grove, arbour, woods, forest) and the suffix -og, from Latin lignum (firewood, tree), Proto-Indo-European *leǵ-no- (that which is collected) [source].

Welsh (Cymraeg) cadno [ˈkadnɔ] = fox; craft person, foxy, deceptive day; bundle of straw used for constructing an air passage in a stack of corn not well-seasoned; skid, scotch, trigger
cadnawes = vixen, female fox

Etymology: probably from the personal name Cadno, from cad (battle), from the Proto-Celtic *katus (battle), from the Proto-Indo-European *kéh₃tus (fight); and the suffix -no, from the Proto-Celtic *gnāw- (knowing) [source].

Words marked with a * are reconstructions.

Sources: Wiktionary, Am Faclair Beag, MacBain’s Dictionary, In Dúil Bélrai English – Old-Irish Glossary, teanglann.ie, On-Line Manx Dictionary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau

Fox

Ants

Words for ant and related things in Celtic languages.

Formica cf. rufibarbis

Words marked with a * are reconstructions.

Old Irish (Goídelc) sengán = ant
Middle Irish (Gaoidhealg) sengán, seangan = ant
Irish (Gaeilge) seangán = ant
seangánach = full of ants
nead seangán = anthill
Scottish Gaelic (Gàidhlig) seangan [ʃɛŋgan] = ant, mean fellow
seangan ‘nad bhriogais = to be fidgety, have the jtters (ants in your breeches)
seangananach [ʃɛŋganəx] = pertaining to or abounding in small ants
Manx (Gaelg) sniengan = ant
snienganagh = ant-infested, formic
crongan sniengan = anthill

Etymology: possibly from the Old Irish seng (thin, slender. meagre) [source].

Proto-Celtic *morwis = ant
Old Irish (Goídelc) moirb [morʲvʲ] = ant
Middle Irish (Gaoidhealg) moirb = ant
Middle Welsh (Kymraec) myr = ant
myrion = ants
morgrug, morcrug = ants
morgrugyn, morcrugyon = ant
Welsh (Cymraeg) mŷr, myrr [mɨːr/miːr] = ant
myrion = ants
myrdwyn = anthill
morgrug [ˈmɔrɡrɨ̞ɡ / ˈmɔrɡrɪɡ] = ants (from mŷr [ant] and crug [hill])
morgrugyn = ant
morgrugaidd, morgrugol = ant-like pertaining to ants, formic
Old Cornish menƿionen = ant
Middle Cornish (Cernewec) menwionen, meuwionen = ant, emmet
Cornish (Kernewek) moryonen = ant, tourists
moryoner = anteater
Old Breton moriuon = ant
Middle Breton (Brezonec) meryen = ant
Breton (Brezhoneg) merien [ˈmɛr.jɛn] = ants
merionenn = ant
merionaer = anteater
merieneg [mɛ.ˈrjẽː.nɛk] = anthill

Etymology: from the Proto-Indo-European *morwi- (ant). Words from the same roots include formic (pertaining to ants) and pismire (ant – archaic) in English, fourmi (ant) in French, mier (ant) in Dutch, maur (ant) in Icelandic and myra (ant) in Swedish [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, Dictionaire Favereau, TermOfis, English – ProtoCeltic WordList (PDF), Etymological Dictionary Of Proto Celtic

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Going, Going, Gone

Words for to go in Celtic languages.

Note: this is one of the few irregular verbs in the celtic languages, and some different parts of the conjugations come from different roots.

Proto-Celtic *tēgeti = to go, step
Old Irish (Goídelc) téít [tʲeːdʲ] = to go, process, depart leave
Irish (Gaeilge) téigh [tʲeːɟ / tʲeːj / tʲeː] = to go, move, proceed, get on, fare, make, cost
Scottish Gaelic (Gàidhlig) tèid = will go – (future form of rach)

Etymology: from the Proto-Indo-European *stéygʰeti (to be walking, to be climbing) [Source].

Old Irish (Goídelc) dul = to go, going
Irish (Gaeilge) dul [d̪ˠʊlˠ] = going, passing, departure, way, method, means, proper, natural, arrangement, style – (verb noun of téigh)
Scottish Gaelic (Gàidhlig) dol [dɔl̪ˠ] = (act of) going, (act of) proceeding
Manx (Gaelg) goll = to go, show out, disembark, going, sinking, passage, departure

Etymology: unknown

Proto-Celtic *monītor = go
Middle Irish (Gaoidhealg) muinithir = goes around
Proto-Brythonic *moned = go
Welsh (Cymraeg) mynd [mɨ̞nd / mɪnd] = to go, leave, depart, die, disappear, perish, come to an end, elapse, pass
Cornish (Kernewek) mos = to go, become
Breton (Brezhoneg) monet = to go, to become

Etymology: from the Proto-Indo-European *menH- [Source].

Words marked with a * are reconstructions.

Sources: Wiktionary, Am Faclair Beag, MacBain’s Dictionary, In Dúil Bélrai English – Old-Irish Glossary, teanglann.ie, On-Line Manx Dictionary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau

Roundness

Words for round and related things in Celtic languages.

Sabhal Mòr Ostaig

Words marked with a * are reconstructions.

Proto-Celtic *krundis = round
Old Irish (Goídelc) cruinn = round, globular, circular
Middle Irish (Gaoidhealg) cruinn, cruind = round, globular, circular, compact, precise
cruinne, cruindae = roundness, rotundity, round mass, universe, world, thrift, hoarding
cruinniucc, cruindiucc = dew-drop
Irish (Gaeilge) cruinn [kɾˠiːnʲ / kɾˠɪn̠ʲ] = round; gathered; exact, accurate; clear, coherent; concentrated; frugal, sparing, miserly
cruinne = roundness
cruinneachán = dome
cruinneog = round object, (small) orb, globe
cruinneogach = globular
cruinnteach = rotunda
Scottish Gaelic (Gàidhlig) cruinn [krɯin̪ʲ] = round, circular, spherical; rotund; neat, succinct, well-formed; assembled, gathered together
cruinne [krɯn̪ʲə] = roundness, globe, sphere, orb
cruinneachail [krɯn̪ʲəxal] = (ac)cumulative
cruinneachan [krɯn̪ʲəxan] = round heap/pile
cruinneachd [krɯn̪ʲəxg] = roundness
cruinnte [krɯn̪ʲdʲə] = curved, rounded
Manx (Gaelg) cruinn = accurate, detailed, unambigous, round, spherical, circular, circumstantial, compact, consummate, exact, scrupulous, strict
cruinnid = circularity, closeness, roundness, strictness, compactness
cruinnaghey = assemblage, congregation, enclose, focus, gather, huddle, round
Proto-Brythonic *krunn = round
Old Welsh (Kembraec) crunn = round, circular, rotund
Middle Welsh (Kymraec) cronn, crwn, cron = round, circular, rotund
Welsh (Cymraeg) crwn [krʊn] = round, circular, rotund, spherical, globular; cylindrical; fat, plump, fleshy; complete, entire; young, small
crynder = roundness
cân gron = round (in music); continual harping upon the same string
hirgrwn = oval
Middle Cornish (Cernewec) cren = round, circular
Cornish (Kernewek) krenn = round
Old Breton (Brethonoc) cren, cron = round
Middle Breton (Brezonec) crenn = round
crennaat = to round off
crenaff, crenna [ˈkrɛnːã] = to round up
Breton (Brezhoneg) krenn [ˈkrɛnː] = medium, round, rounded, full
krennañ [ˈkrɛnːã] = to trim, shorten, slice
krennaat = to round off
krennadur = rounding, trimmings
krennder = roundness

Etymology: unknown, possibly borrowed from a non-Indo-European language [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, Dictionaire Favereau, TermOfis, English – ProtoCeltic WordList (PDF), Etymological Dictionary Of Proto Celtic

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Animals

Words for animal and related beasts in Celtic languages.

Animals / Anifeiliad

Words marked with a * are reconstructions.

Proto-Celtic *mīlom = animal
Old Irish (Goídelc) míl = animal, louse, hare
Middle Irish (Gaoidhealg) míl, miol [mʲiːl] = animal, louse
Irish (Gaeilge) míol [mʲiːlˠ, mʲiːl] = animal, creature, insect, louse
míolach = lousy, verminous, measly, mean, full of animals
míolachán = verminous person or animal
míoladóir = louse-picker, scrounger
míoladóireacht = picking live, scrounging
míoleolaí = zoologist
míoleolaíocht = zoology
míolra = vermin
Scottish Gaelic (Gàidhlig) mial [miəl̪ˠ] = louse, tick, animal (archaic)
mialach [miəl̪ˠəx] = lousy, abounding in live, harmless
mialachd [miəl̪ˠəxg] = lousiness, harmlessness
mialtag [miəl̪ˠdag] = gnat
mial-bhalla = bedbug
mial-eòlas = = zoology
Manx (Gaelg) meeyl [miːl] = gnat, insect, louse, gnat
meeyllagh = insectlike, lousy, verminous
meeyllyn = vermin, flies
meeyllaghys = lousiness
Proto-Brythonic *mil [ˈmiːl] = animal
Middle Welsh (Kymraec) mil = animal, beast, creature
Welsh (Cymraeg) mil [miːl] = animal, beast, creature
milaidd = pertaining to animals, like an animal, bestial
mildraeth, mildraith = zoology, zoography, natural history
mildraethydd = zoologist, zoographer
milfa = menagerie
milfeddyg = verterinary, surgeon, farrier
milgi = greyhound
enfil = animal, beast, creature
Middle Cornish (Cernewec) mil = animal, beast
milen = brutish, brutal, cruel
milgy = hound, greyhound
Cornish (Kernewek) mil = animal
milonieth = zoology
milus = brutal
miluster = brutality
milva = zoo
milvedhek = vet, vetinary surgeon
Middle Breton mil = animal
Breton (Brezhoneg) mil [ˈmiːl] = animal
euzhvil = monster
morvil = whale

Etymology: from the Proto-Indo-European *(s)meh₁l- (small animal) [source].

Old Irish (Goídelc) anmandae, anmande = animal, creature
Middle Irish (Gaoidhealg) anmandae = living creature, animal, beast, head of cattle
Irish (Gaeilge) ainmhí [anʲəvʲiː]= animal, brute, monster
ainmhíoch = animal, brutish
ainmhíocht = animal nature, brutishness
Scottish Gaelic (Gàidhlig) ainmhidh [ɛnɛvɪ] = animal, beast of burden, heifer
ainmhidheach [ɛnɛvɪjəx] = brutish, beastly
ainmhidheachd [ɛnɛvɪjəxg] = brutality, brutishness

Etymology: from the Old Irish ainim(m) (soul, life), from the Latin anima (soul, spirt, life; breath), or from the Proto-Celtic *anaman (soul, spirit), from Proto-Indo-European *h₂enh₁mos, from *h₂enh₁- (breathe), which is also the root of the English word animal [source].

Middle Welsh (Kymraec) aniueileit, anyueyl, anieuil = animal, beast, creature
aniueileid, anifeilyeid, anifeiliaidd = animal-like, bestial
Welsh (Cymraeg) anifail [aˈnɪvai̯l / aˈniːvai̯l] = animal, beast, creature
anifeil(i)aidd = animal-like, bestial, brutish, savage, foul
anifeilig = animal(-like), bestial, brutal
anifeiliol = animal(-like), bestial, beastly, brutal
anifeilrwydd = carnality, sensuality
Middle Cornish (Cernewec) eneval = animal
enevales = female animal
Cornish (Kernewek) eneval = animal
eneval dov = pet
Middle Breton (Brezonec) aneual, anneual = animal
Breton (Brezhoneg) aneval [ãˈneːval] = animal

Etymology: from the Latin animal (animal, living creature), from animālis (animate, living), from anima (soul, spirt, life; breath) [source].

Proto-Celtic *betrixs = (?)
Old Irish (Goídelc) bethadach = animal
Middle Irish (Gaoidhealg) bethach, bethadach = animal, creature, beast
Irish (Gaeilge) beithíoch [bʲɛˈhiəx / ˈbʲɛhiəx / ˈbʲɛhiə(h)] = beast, (large) animal, brute; (large) specimen of creature, bovine animal; heifer, cow, cattle, horse
Scottish Gaelic (Gàidhlig) beathach [bɛhəx] = animal, beast, head of cattle, brute
beathachachadh [bɛhəxəɣ] = living, feeding, nourishing, sustaining, nourishment, nutrition
beathachail [bɛhəxal] = nutritious, nutritional
beathachair [bɛhəxɛrʲ] = animator
beathaich [bɛhɪç] = feed, nourish, support, sustain
beithir [behɪrʲ] = any wild or savage thing, beast; thunderbolt; lightning; strong gust of wind; warrior, hero
Manx (Gaelg) baagh = animal, pet, beast
beishtagh = beastly, bestial, brutish, monstrous, filthy

Etymology: from the Middle Irish betha (life), from Old Irish bethu (life), from Proto-Celtic *biwotūts (life), from *biwos (alive), from Proto-Indo-European *gʷih₃wós (alive) [source].

Words from the same roots include words for food and life in Celtic languages, quick and zoo in English, and vida (life) in Spanish [source].

Proto-Celtic *lutno- = (young) animal
Scottish Gaelic (Gàidhlig) loth [l̪ˠɔh] = fily, foal, colt
lothag [l̪ˠɔhag] = young colt / filly / foal
lothaire [l̪ˠɔhɪrʲə] = gangly / spindly person
lothach [l̪ˠɔhəx] = abounding in fillies / foals / colts
Manx (Gaelg) lhiy = colt
Middle Welsh (Kymraec) lluden, llydyn, llwdyn = (young) animal, beast
llwdyngar = involving (carnal) bestiality
Welsh (Cymraeg) llwdn = the young of an animal (colt, foal, kid, etc), animal, beast, young man, youth, oaf, dolt
llwdngar = involving (carnal) bestiality
Middle Cornish (Cernewec) lodn = young cow or sheep, young ox, bullock, steer, wether
Cornish (Kernewek) lodn = bullock, young ox
lodnek = bovine
lodnow = cattle
Middle Breton (Brezonec) loeznet, loezn, loznet = animal, beast
loeznedus = abounding in animals
Breton (Brezhoneg) loen [ˈlwẽːn] = animal, beast
loeniñ = to brutalise, labour, punish
loenedus = gamey
loenegezh = bestiality
loenek = animal, bestial, brutish

Etymology: from PIE *polH- (animal young), from *peh₂w- (smallness). Words from the same roots include few, filly, foal, pony and puppy 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