Grudging is the present participle of grudge, from Middle English grucchen ('to grumble, complain'), from Old French grouchier, of probably imitative origin. The participial history matters: an older ongoing or agentive verbal form is preserved in English as the word's lexical shape. In present use, it is used as an adjective meaning "given or felt reluctantly and unwillingly", so the historical material remains connected with the current sense rather than standing as bare ancestry. The wider English family includes derivatives such as grudgingly and related forms such as grudge and begrudge, showing how the same historical material continues to organize neighboring vocabulary. The named historical forms include Old French grouchier, keeping the history tied to concrete forms rather than a loose resemblance. Its semantic neighborhood is marked by reluctant, unwilling, resentful, and begrudging on one side and contrasts such as willing, generous, and wholehearted on the other, locating the modern specialization without adding a new origin story.