Words for gods, deities & days in Celtic languages.
| Proto-Celtic | *dēwos = god, deity, day *dēwā = goddess |
|---|---|
| Gaulish | deuognata, teuoxtonio-, dēuos, dēwos, dēvona = god |
| Celtiberian | teiuoreikis, deobriga = god |
| Galician | deva = goddess (in river names) |
| Old Irish (Goídelc) | día [dʲiːa̯] = god |
| Irish (Gaeilge) | dia [dʲiə] = god, deity (plural: déithe) |
| Scottish Gaelic (Gàidhlig) | dia [dʲiə] = god (plural: diathan) |
| Manx (Gaelg) | jee = god, deity, godhead (plural: jeeaghyn) |
| Proto-Brythonic | *duɨw [ˈduɨ̯w] = god |
| Old Welsh | duiu = god |
| Welsh (Cymraeg) | duw [dɨu̯ / dɪu̯] = god, the Supreme Being, the Almighty, the Christian Trinity; O God! (plural: duwiau) |
| Old Cornish | duy = god |
| Cornish (Kernewek) | duw [dyˑʊ / diˑʊ] = god (plural: duwow) |
| Old Breton | doi = god |
| Middle Breton | doe = god |
| Breton (Brezhoneg) | doue = god |
Etymology
From Proto-Indo-European *deywós (god), from *dyew- (sky, heaven) [source]. The Latin name for the city of Chester, Deva, possibly comes from the same Celtic root [source].
Words marked with a * are reconstructions.
Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Dictionnaire Favereau