nudge

Circa 17th century, perhaps of North Germanic origin, related to Norwegian nugge, nyggje (“to push, rub, shove”), Icelandic nugga (“to rub, massage”), from the root of Proto-Germanic *hnōjaną (“to smooth, join together”), from Proto-Indo-European *kneh₂- (compare Ancient Greek κνάω (knáō, “to scratch, scrape”), source of English acnestis).

Compare also Scots nodge (“to push, poke, nudge”), knidge (“to push, squeeze”), gnidge (“to rub, press, squeeze, bruise”), and knudge (“to squeeze, press down with the knuckles”), Saterland Frisian Nukke, Nuk (“a sudden push”), Middle Low German nucke, nücke, gnücke (“a sudden push, shock, impetus”). Compare also dialectal nuch (“to tremble”), Middle English nuchen (“to tremble”).