Avenge

(v. t.) To take vengeance for; to exact satisfaction for by punishing the injuring party; to vindicate by inflicting pain or evil on a wrongdoer.

Avenge - Other Definitions

(v. t.) To take vengeance for; to exact satisfaction for by punishing the injuring party; to vindicate by inflicting pain or evil on a wrongdoer.
(v. t.) To treat revengefully; to wreak vengeance on.
(v. i.) To take vengeance.
(n.) Vengeance; revenge.