This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. One who engages in deception under an assumed name or identity.

n. Someone who attempts to deceive by using an assumed name or identity.

n. One who imposes upon others; a person who assumes a character or title not his own, for the purpose of deception; a pretender.

n. One who imposes on others; a person who practises deception, usually under a false guise or an assumed character.

n. a person who makes deceitful pretenses

"The case was the first of its kind for the Bay City office, Flattery said, but the medal-wearing impostor is not uncommon."

cheat    beguiler    deceiver    trickster    slicker    cheater   

ringer    namedropper   

cheat    deceiver    rogue    pretender    counterfeiter    humbug    bunyip    deceptress    mountebank    charlatan   

Auster    Gloucester    auster    coster   

hypocrite    swindler    knave    liar    charlatan    scoundrel    villain    libertine    schemer    traitor