Synonyms for impostor
noun
pretender, charlatan, quack, fraud, impersonator, masquerader, mountebank, deceiver, dissembler, sham, hypocrite, fake*, faker*, phony*, sharper*, con artist*; see also cheat 1, hypocrite. See syn. study at quack.
See impostor in Webster's New World Roget's A-Z Thesaurus II
Learn more about impostor