If you avenge a wrong or harmful act, you hurt or punish the person who is responsible for it. He has devoted the past five years to avenging his daughter's death She had decided to avenge herself and all the other women he had abused. to do something to hurt or punish someone because they have harmed or offended you (venge (13-20 centuries), from venger; VENGEANCE)
take revenge for a perceived wrong; "He wants to avenge the murder of his brother"
To take vengeance for; to exact satisfaction for by punishing the injuring party; to vindicate by inflicting pain or evil on a wrongdoer