quack

Synonyms: bum dishonest dissembling fake false fraudulent phony pretended pretentious pseudo sham simulated unprincipled

Antonyms: genuine original real

Synonyms: actor bum bunco artist charlatan cheat con artist counterfeit counterfeiter fake faker flimflammer four-flusher fraud hoser humbug impostor mountebank phony playactor pretender pseudo put-on quacksalver sham shammer shark sharp simulator slicker whip