avenge
verb [ T ] formal uk/əˈvendʒ/ us/əˈvendʒ/
报…之仇，报复;为…雪耻，替…报仇
to do harm to or punish the person responsible for something bad done to you or your family or friends in order to achieve a fair situation
He swore he would avenge his brother's death. 他发誓要报杀兄之仇。
She determined to avenge herself on the killer. 她决心要让凶手血债血偿。
At the end of the film, the murderer is killed by his victim's avenging girlfriend. 影片的最后，受害者的女友终于报仇雪恨，杀死了凶手。