SYNONYMS
traitor, turncoat, betrayer, informer, back-stabber, double-crosser, double-dealer, quisling, Judas
cheat, swindler, fraudster, trickster, charlatan, viper, serpent, snake in the grass
informal two-timer, creep, rat, beast, pig, skunk, weasel
British informal twister, scrote
British informal, dated bounder, rotter
North American informal rat fink
Irish informal sleeveen
Australian informal dingo
derogatory bastard, dog, dirty dog
derogatory, informal swine
vulgar slang shit
dated heel, cad, blackguard