Where does “efo” come from?
efo (Welsh) comes from Welsh ef, from Proto-Indo-European éy, from Proto-Indo-European h₁e-.
Ancestry of “efo”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Welsh | ef | he; him |
| 2 | Proto-Indo-European | éy | the; demonstrative pronoun; this one, he |
| 3 | Proto-Indo-European | h₁e- | — |