Liberal Dictionary English Dictionary
noun
- a person who practices deception under an assumed character, identity, or name.
noun
- a person who deceives others, esp by assuming a false identity; charlatan
1580s, from Middle French imposteur (16c.), from Late Latin impostor, agent noun from impostus, collateral form of impositus, past participle of imponere “place upon, impose upon, deceive,” from assimilated form of in- “into, in, on, upon” (see in- (2)) + ponere “to put place” (see position).