Where does “deu-” come from?

deu- (Proto-Indo-European) comes from Middle Welsh deu, from Proto-Brythonic *dow, from Proto-Celtic *duwo, from Proto-Indo-European dwóh₁ — two.

deu- (Proto-Indo-European): lack, fail; to injure, destroy, burn; to do,...

Definitions

  1. lack, fail; to injure, destroy, burn; to do,...

Ancestry of “deu-”, step by step

StepLanguageWordMeaning
1Middle Welshdeutwo
2Proto-Brythonic*dowtwo
3Proto-Celtic*duwotwo
4Proto-Indo-Europeandwóh₁two

Words derived from “deu-”

Every word from Proto-Indo-European dwóh₁ →Every word from Proto-Celtic *duwo →Every word from Proto-Brythonic *dow →