Words for age in Celtic languages.
| Proto-Celtic | *aiwestom = age, lifetime, era |
|---|---|
| Old Irish (Goídelc) | áes [aːi̯s] = age, years; stage, period; era; lifetime |
| Irish (Gaeilge) | aois [iːʃ] = age, length of life; old age; period, era |
| Scottish Gaelic (Gàidhlig) | aois [ɯːʃ] = age, old age, antiquity |
| Manx (Gaelg) | eash = eon, age, century; oldness, old age |
| Proto-Brythonic | *oɨs = age |
| Old Welsh | oit = time, period |
| Welsh (Cymraeg) | oed [oːɨ̯d / ɔi̯d] = time, period, space (of time); life-span; age oes [ˈoes] = age, long indefinite period; century; time, day(s); epoch |
| Old Cornish | huis= age |
| Cornish (Kernewek) | oos / ooj = age, period, epoch, era |
| Old Breton | oit = age |
| Middle Breton | oet = age |
| Breton (Brezhoneg) | oad = age |
Etymology: from the Proto-Indo-European *h₂ey-w-es-to-, from *h₂ey- (age, eternity), which is also the root of the English words age and eon [source].
Words marked with a * are reconstructions.
Sources: Wiktionary, Am Faclair Beag, teanglann.ie, Fockleyreen: Manx – English Dictionary, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau
