[1] : The Collaborative International Dictionary of English v.0.48

impostor \impos"tor\, n. l. impostor a deceiver, fr. imponere
   to impose upon, deceive. see impone.
   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." --milton.

   syn: deceiver; cheat; rogue. see deceiver.
        1913 webster
see also:
impone deceiver 

[2] : WordNet (r) 2.0

impostor
     n : a person who makes deceitful pretenses syn: imposter, pretender,
          fake, faker, fraud, sham, shammer, pseudo, pseud,
          role player
see also:
imposter pretender fake faker fraud sham 
shammer pseudo pseud role player 

[3] : Moby Thesaurus II by Grady Ward, 1.0

85 moby thesaurus words for "impostor":
   ape, beguiler, blagueur, bluff, bluffer, charlatan, cheat,
   clinquant, con man, confidence man, conformist, copier, copycat,
   copyist, counterfeit, counterfeiter, cuckoo, deceiver, dissembler,
   dissimulator, dummy, echo, echoer, echoist, fake, fakement, faker,
   flimflam man, forger, forgery, fourflusher, frame-up, fraud, hoax,
   humbug, hypocrite, imitation, imitator, impersonator, imposter,
   junk, malingerer, mime, mimer, mimic, mimicker, misleader, mock,
   mocker, mockingbird, monkey, mountebank, parrot, paste,
   pettifogger, phony, pinchbeck, plagiarist, poll-parrot, polly,
   polly-parrot, poser, poseur, pretender, put-on, put-up job, quack,
   quacksalver, quackster, ringer, rip-off, saltimbanco, sham,
   shammer, shark, sheep, shoddy, shyster, simulacrum, simulator,
   swindle, swindler, tinsel, trickster, whited sepulcher

[4] : THE DEVIL'S DICTIONARY ((C)1911 Released April 15 1993)

impostor n.  a rival aspirant to public honors.

Impostor >> I Words
Impostor, definition of term: Impostor
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