inauthentic

from WordNet (r) 3.0 (2006)

inauthentic
    adj 1: intended to deceive; "a spurious work of art" [syn:
           {inauthentic}, {unauthentic}, {spurious}]

from Moby Thesaurus II by Grady Ward, 1.0

38 Moby Thesaurus words for "inauthentic":
      absonant, contradictory, contrary to reason, fallacious, faulty,
      flawed, garbled, illogical, inconclusive, incongruous,
      inconsequent, inconsequential, inconsistent, invalid, irrational,
      loose, miscited, misquoted, misreported, misstated, nonscientific,
      not following, paralogical, reasonless, self-annulling,
      self-contradictory, self-refuting, senseless, spurious,
      unauthentic, unauthoritative, unconnected, unfounded,
      unphilosophical, unreasonable, unreliable, unscientific,
      without reason