Yet
Old English gīet(a), of unknown origin.
wiktionary
From Middle English yet, yit, from Old English ġīet, gȳta, from Proto-Germanic *juta (compare West Frisian jit, jitte(“yet”), Dutch ooit(“ever”), German jetzt(“now”)), compound of (1) *ju(“ever”, adverb) (see aye), from Proto-Indo-European *h₂yew-, accusative of *h₂óyu(“long time”) and (2) the Proto-Germanic *ta(“to,towards”) , from Proto-Indo-European *do. [1] [2] More at aye and -th.
From Middle English yeten, from Old English ġēotan(“to flow, pour”), from Proto-West Germanic *geutan, from Proto-Germanic *geutaną(“to flow, pour”), from Proto-Indo-European *ǵʰewd-(“to pour”). Cognate with Scots yat(“to pour, yet”), West Frisian jitte(“to scatter, shed, pour”), Dutch gieten(“to pour, cast, mould”), German gießen(“to pour, cast, mould”), Swedish gjuta(“to pour, cast”). Doublet of yote.
From Middle English yeten, ȝeten, from Old English ġietan.
etymonline
yet (adv.)
Old English get, gieta "till now, thus far, earlier, at last, also," an Anglo-Frisian word (cognates: Old Frisian ieta, Middle High German ieuzo), of unknown origin; perhaps connected to PIE pronominal stem *i- (see yon). The meaning in other Germanic languages is expressed by descendants of Proto-Germanic *noh- (source of German noch), from PIE *nu-qe- "and now." As a conjunction from c. 1200.
