unauthentic \unauthentic\
   see authentic.
see also:
authentic 

unauthentic
     adj : intended to deceive; "a spurious work of art" syn: inauthentic,
            spurious
see also:
inauthentic spurious 

142 moby thesaurus words for "unauthentic":
   albigensian, arian, catharist, donatist, ebionitist, erastian,
   gnostic, jansenist, jansenistic, jovinianist, jovinianistic,
   lollard, manichaean, monophysite, monophysitic, montanist,
   montanistic, pelagian, sabellian, waldensian, wyclifite, absonant,
   affected, antinomian, apocryphal, artificial, assumed, bastard,
   bogus, brummagem, colorable, colored, contradictory,
   contrary to reason, counterfeit, counterfeited, distorted,
   dressed up, dummy, emanationist, embellished, embroidered,
   erroneous, ersatz, factitious, fake, faked, fallacious, falsified,
   faulty, feigned, fictitious, fictive, flawed, garbled, heretical,
   heterodox, hylotheist, hylotheistic, illegitimate, illogical,
   imitation, inauthentic, inconclusive, incongruous, inconsequent,
   inconsequential, inconsistent, invalid, irrational, junky, loose,
   make-believe, man-made, miscited, misquoted, misreported,
   misstated, mock, nonofficial, nonorthodox, nonscientific,
   not following, pantheist, pantheistic, paralogical, perverted,
   phony, pinchbeck, pretended, pseudo, put-on, quasi, queer,
   reasonless, self-annulling, self-contradictory, self-refuting,
   self-styled, senseless, sham, shoddy, simulated, so-called,
   soi-disant, spurious, supposititious, synthetic, tin, tinsel,
   titivated, twisted, unaccepted, unapproved, unattested,
   unauthenticated, unauthoritative, uncanonical, uncertified,
   unchecked, unconfirmed, unconnected, uncorroborated,
   undemonstrated, unfounded, ungenuine, unnatural, unofficial,
   unorthodox, unphilosophical, unproved, unreal, unreasonable,
   unreliable, unscientific, unscriptural, unsound, unvalidated,
   unverified, unwarranted, warped, without reason