Where does “un-” come from?

un- (Cornish) comes from Cornish unn, from Proto-Celtic oinos, from Proto-Indo-European óynos — one; single.

un- (Cornish): mono-, uni

Definitions

  1. mono-, uni

Ancestry of “un-”, step by step

StepLanguageWordMeaning
1Cornishunnone (used before nouns)
2Proto-Celticoinosone
3Proto-Indo-Europeanóynosone; single

Words derived from “un-”

Every word from Proto-Indo-European óynos →Every word from Proto-Celtic oinos →Every word from Cornish unn →