Where does “ɸro” come from?

ɸro (Proto-Celtic) comes from Proto-Indo-European pró, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “ɸro”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeanprótoward, leading to
2Proto-Indo-Europeanper-before, in front; first; to go through
3Proto-Indo-Europeanpr̥tóspassed , crossed

Words derived from “ɸro”

Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Proto-Indo-European pró →