Where does “dwy” come from?
dwy (Welsh) comes from Welsh dau, from Proto-Brythonic *dow, from Proto-Celtic *duwo, from Proto-Indo-European dwóh₁ — two.
dwy (Welsh): feminine of dau; two
Ancestry of “dwy”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Welsh | dau | two |
| 2 | Proto-Brythonic | *dow | — |
| 3 | Proto-Celtic | *duwo | — |
| 4 | Proto-Indo-European | dwóh₁ | two |