Where does “dwy-” come from?

dwy- (Welsh) comes from Proto-Celtic dwī, from Proto-Indo-European dwih₂, from Proto-Indo-European dwóh₁ — two.

dwy- (Welsh): two-, bi-, di-, duo

Definitions

  1. two-, bi-, di-, duo

Ancestry of “dwy-”, step by step

StepLanguageWordMeaning
1Proto-Celticdwī—
2Proto-Indo-Europeandwih₂—
3Proto-Indo-Europeandwóh₁two

Words derived from “dwy-”

Every word from Proto-Indo-European dwóh₁ →Every word from Proto-Indo-European dwih₂ →Every word from Proto-Celtic dwī →