im·pos·tor /ɪmˈpɑstɚ/
  冒名頂替的人,騙子,冒牌
  Im·pos·tor n.  One who imposes upon others; a person who assumes a character or title not his own, for the purpose of deception; a pretender. “The fraudulent impostor foul.”
  Syn: -- Deceiver; cheat; rogue. See Deceiver.
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  impostor
       n : a person who makes deceitful pretenses [syn: imposter, pretender,
            fake, faker, fraud, sham, shammer, pseudo, pseud,
            role player]