Where does “su-” come from?
su- (Proto-Celtic) comes from Proto-Indo-European h₁su-, from Proto-Indo-European h₁wes- — good; to be cheerful, happy; to eat, to feast.
su- (Proto-Celtic): good, well
Ancestry of “su-”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Proto-Indo-European | h₁su- | good |
| 2 | Proto-Indo-European | h₁wes- | good; to be cheerful, happy; to eat, to feast |