Where does “fethid” come from?

fethid (Middle Irish) comes from Proto-Celtic *weteti, from Proto-Indo-European wēt- — year.

Ancestry of “fethid”, step by step

StepLanguageWordMeaning
1Proto-Celtic*weteti—
2Proto-Indo-Europeanwēt-year

Words derived from “fethid”

Every word from Proto-Indo-European wēt- →Every word from Proto-Celtic *weteti →