a person who pretends to be someone or something that he or she is not, as to deceive or cheat others
Origin of impostorFrench imposteur from Late Latin impostor from past participle of Classical Latin imponere: see impose
One who engages in deception under an assumed name or identity.
Origin of impostorFrench imposteur from Latin impostor one who assigns a name from impostus variant of impositus past participle of impōnere to place upon ; see impose .
From Middle French imposteur