Origin: 1275–1325; (v.) Middle English rewarden orig., to regard < Old North French rewarder to look at, variant of Old French reguarder; (noun) Middle English: orig., regard < Anglo-French, Old North French, variant of Old French reguard, derivative of reguarder;see regard
Synonyms 2. desert, pay, remuneration; requital; bounty, premium, bonus. Reward,prize,recompense imply something given in return for good. A reward is something given or done in return for good (or, more rarely, evil) received; it may refer to something abstract or concrete: a $50 reward; Virtue is its own reward. Prize refers to something concrete offered as a reward of merit, or to be contested for and given to the winner: to win a prize for an essay. A recompense is something given or done, whether as reward or punishment, for acts performed, services rendered, etc.; or it may be something given in compensation for loss or injury suffered, etc.: Renown was his principal recompense for years of hard work. 3. compensate, pay, remunerate.
c.1300, "a regarding, heeding, observation," from O.N.Fr. reward, variant of O.Fr. reguard (see regard). Meaning "repayment for some service" is from mid-14c.
early 14c., from O.N.Fr. rewarder, variant of O.Fr. regarder "take notice of, regard, watch over," from re-, intensive prefix, + garder "look, heed, watch" (see guard). Originally any form of requital.