Where does “fer” come from?

fer (Old Frisian) comes from Proto-Germanic ferrai, from Proto-Indo-European per-nóy, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “fer”, step by step

StepLanguageWordMeaning
1Proto-Germanicferraifar, distant
2Proto-Indo-Europeanper-nóy—
3Proto-Indo-Europeanper-before, in front; first; to go through
4Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Proto-Indo-European per-nóy →