c. 1300 "to grant, bestow;" early 14c. "to give as compensation," from Old North French rewarder "to regard, reward" (Old French regarder) "take notice of, regard, watch over," from re-, intensive prefix (see re-), + warder "look, heed, watch," from a Germanic source, from Proto-Germanic *wardon "to guard" (from PIE root *wer-(3) "perceive, watch out for"). Originally any form of requital. A doublet of regard. Related: Rewarded; rewarding.