Where does “so-” come from?

so- (Old Irish) comes from Proto-Celtic su-, from Proto-Indo-European h₁su-, from Proto-Indo-European h₁wes- — good; to be cheerful, happy; to eat, to feast.

so- (Old Irish): good

Definitions

  1. good

Ancestry of “so-”, step by step

StepLanguageWordMeaning
1Proto-Celticsu-good, well
2Proto-Indo-Europeanh₁su-good
3Proto-Indo-Europeanh₁wes-good; to be cheerful, happy; to eat, to feast

Words derived from “so-

Every word from Proto-Indo-European h₁wes-Every word from Proto-Indo-European h₁su-Every word from Proto-Celtic su-