Where does “forther” come from?

forther (Middle English) comes from Old English furþor, from Proto-West Germanic furþer, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “forther”, step by step

StepLanguageWordMeaning
1Old Englishfurþorfurther
2Proto-West Germanicfurþer—
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-West Germanic furþer →