Where does “carthu” come from?

carthu (Middle Welsh) comes from Proto-Brythonic *karθad, from Proto-Celtic *kartati — to clean, wipe.

Ancestry of “carthu”, step by step

StepLanguageWordMeaning
1Proto-Brythonic*karθad—
2Proto-Celtic*kartatito clean, wipe

Words derived from “carthu”

Every word from Proto-Celtic *kartati →Every word from Proto-Brythonic *karθad →