n. 25B6; noun TRAITOR, back-stabber, Judas, double-crosser; renegade, quisling, double agent, collaborator, informer, mole, stool pigeon; turncoat, defector; informal snake in the grass, rat, scab; Brit. informal grass, supergrass, nark; N. Amer. informal fink, stoolie.
BETRAYER
Meaning of BETRAYER in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012