scoundrel

noun

the lying scoundrel admitted that he was married to another woman:

rogue, rascal, good-for-nothing, reprobate, unprincipled person;

cheat, swindler, fraudster, trickster, charlatan;

informal villain, beast, son of a bitch, SOB, rat, louse, cur, hound, skunk, heel, snake, snake in the grass, wretch, scumbag, bad egg, stinker;

British, informal scrote, blighter;

Irish, informal sleeveen, spalpeen;

North American, informal rat fink;

informal , mainly North American butthole;

derogatory bastard, dog, dirty dog;

derogatory , informal swine;

British, informal , dated rotter, bounder;

vulgar slang shit;

British, vulgar slang bugger;

North American, vulgar slang motherfucker, mother, mofo;

dated cad, ne'er-do-well;

archaic blackguard, miscreant, knave, dastard, vagabond, varlet, wastrel, rapscallion, whoreson.

scoundrel Oxford Dictionary of English