Where does “tharr” come from?

tharr (Middle English) comes from Old English þearf, from Proto-Germanic þarf, from Proto-Germanic þurbaną, from Proto-Indo-European terp- — to satisfy.

Ancestry of “tharr”, step by step

StepLanguageWordMeaning
1Old Englishþearfneed, hardship, privation; first/third-person...
2Proto-Germanicþarf—
3Proto-Germanicþurbanąto need, to require; to have to
4Proto-Indo-Europeanterp-to satisfy

Words derived from “tharr”

Every word from Proto-Indo-European terp- →Every word from Proto-Germanic þurbaną →Every word from Proto-Germanic þarf →