Where does “therefor” come from?

Therefor comes from Middle English for, from Middle English þeir, from Proto-Germanic þar, ultimately from Proto-Indo-European per-, a root meaning "forward" or "through."

therefor (English): Therefore, for that or this reason or cause; For...

Definitions

  1. Therefore, for that or this reason or cause; For...

Ancestry of “therefor”, step by step

therefor traces back through two separate lines of ancestry.

via English for

StepLanguageWordMeaning
1EnglishforBecause, as, since; Towards; in the direction of;...
2Middle Englishforfor
3Old Englishfōrjourney; going, course, journey
4Proto-West Germanicfurifor; before; forward
5Proto-Germanicfurifor, before; before, forward
6Proto-Indo-Europeanpreh₂-before, in front
7Proto-Indo-Europeanper-before, in front; first; to go through
8Proto-Indo-Europeanpr̥tóspassed , crossed

via English there

StepLanguageWordMeaning
1EnglishthereIn a place or location at some distance from the...
2Old Englishþærthere
3Proto-West Germanicþārthere
4Proto-Germanicþarthere, in that place
5Proto-Indo-Europeantar-there
6Proto-Indo-Europeanto-it; that; the, that
7Proto-Indo-Europeanthis; that
Every word from Proto-Indo-European pr̥tós