Where does “ail-” come from?
ail- (Welsh) comes from Welsh ail, from Middle Welsh eil, from Proto-Brythonic ėl, from Proto-Celtic alyos, from Proto-Indo-European h₂élyos, from Proto-Indo-European h₂él-.
ail- (Welsh): again, re-
Ancestry of “ail-”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Welsh | ail | second |
| 2 | Middle Welsh | eil | — |
| 3 | Proto-Brythonic | ėl | API; second, other |
| 4 | Proto-Celtic | alyos | other, second |
| 5 | Proto-Indo-European | h₂élyos | other, another |
| 6 | Proto-Indo-European | h₂él- | — |