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Old English earnian "deserve, earn, merit, win, get a reward for labor," from Proto-Germanic *aznojan (cf. Old Frisian esna "reward, pay"), from *azna "labor" especially "field labor" (cf. Old Norse önn "work in the field"), from PIE *aznon "to do harvest work, serve" (cf. Old High German arnon "to reap"), denominative verb from *es-en- "harvest, fall" (cf. Old High German aren "harvest, crop," German Ernte "harvest," Old English ern "harvest," Gothic asans "harvest, summer," Old Church Slavonic jeseni, Russian osen, Old Prussian assanis "autumn").
Also from the same root are Gothic asneis, Old High German esni "hired laborer, day laborer," Old English esne "serf, laborer, man." Related: Earned; earning.
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