informer
🇬🇧/ɪnˈfɔːmə(r)/ 🇺🇸/ɪnˈfɔːrmər/An informer is a person who tells the police that someone has done something illegal. 告密者
noun [专属名词] 告密者;通知者;控告人
One of the gang members had turned informer. 团伙中的一员后来变成了告密者。
One of the gang members had turned informer. 团伙中的一员后来变成了告密者。