reciprocate
/ri-ˈsi-prə-ˌkāt/
verb
to give and take mutually
to return in kind or degree
to make a return for something
reciprocate retaliate requite return mean to give back usually in kind or in quantity. reciprocate implies a mutual or equivalent exchange or a paying back of what one has received. retaliate usually implies a paying back of injury in exact kind, often vengefully.