Where does “dá-” come from?
dá- (Irish) comes from Irish dhá, from Old Irish dá, from Proto-Celtic dwau, from Proto-Brythonic dọw, from Proto-Celtic *duwo, from Proto-Indo-European dwóh₁ — two.
dá- (Irish): Alternative form of dé-
Ancestry of “dá-”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Irish | dhá | two; Alternative form of dá |
| 2 | Old Irish | dá | two |
| 3 | Proto-Celtic | dwau | two |
| 4 | Proto-Brythonic | dọw | two |
| 5 | Proto-Celtic | *duwo | — |
| 6 | Proto-Indo-European | dwóh₁ | two |