Where does “erc” come from?

erc (Middle Irish) comes from Primitive Irish ᚓᚏᚉᚐ, from Proto-Celtic *ɸerkos, from Proto-Indo-European perḱ-, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “erc”, step by step

StepLanguageWordMeaning
1Primitive Irishᚓᚏᚉᚐ—
2Proto-Celtic*ɸerkosspeckled
3Proto-Indo-Europeanperḱ-colored; motley; to open, rip up
4Proto-Indo-Europeanper-before, in front; first; to go through
5Proto-Indo-Europeanpr̥tóspassed , crossed

Words derived from “erc”

Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Proto-Indo-European perḱ- →
erc — Etymology, Origin & Word History | Etymology Explorer