/rɪˈtæl.i.eɪt/
to do sth harmful to sb because they have harmed you first 报复；反击；复仇 SYN revenge
~ (against sb/sth)
to retaliate against an attack
对攻击进行还击
~ (by doing sth/with sth)
The boy hit his sister, who retaliated by kicking him.
男孩打了他妹妹，妹妹则回敬了他一脚。