Where does “bych” come from?

bych (Middle Welsh) comes from Proto-Brythonic bɨx, from Proto-Celtic *biggos — small, little.

Ancestry of “bych”, step by step

StepLanguageWordMeaning
1Proto-Brythonicbɨxsmall
2Proto-Celtic*biggossmall, little

Words derived from “bych”

Every word from Proto-Celtic *biggos →Every word from Proto-Brythonic bɨx →