Where does “vor-” come from?

vor- (Middle English) comes from Old English fer-, from Proto-Germanic fer-, from Proto-Germanic fra-, from Proto-Indo-European pro-, from Proto-Indo-European por-, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “vor-”, step by step

StepLanguageWordMeaning
1Old Englishfer-unstressed form of Old English prefix for-
2Proto-Germanicfer-
3Proto-Germanicfra-off, away; completely, fully, up
4Proto-Indo-Europeanpro-toward, forward
5Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
6Proto-Indo-Europeanper-before, in front; first; to go through
7Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Proto-Indo-European por-