Begrudge

wiktionary

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From Middle English bigrucchen(“to grumble at”), equivalent to be-(“at, about, over”) +‎ grudge. Compare also English begrouch.

etymonline

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begrudge (v.)

late 14c., bigrucchen, "grumble over, find fault, show dissatisfaction," especially "envy the possession of," from be- + Middle English grucchen "to murmur, find fault with, be angry" (see grudge). Related: Begrudged; begrudging; begrudgingly.