v.
1. intr. repay an injury, insult, etc., in kind; attack in return; make reprisals.
2 tr. a (usu. foll. by upon) cast (an accusation) back upon a person. b repay (an injury or insult) in kind.
Derivatives:
retaliation n. retaliative adj. retaliator n. retaliatory adj.
Etymology: L retaliare (as RE-, talis such)