apocryphal

apocryphal
    adj 1: being of questionable authenticity
    2: of or belonging to the Apocrypha
    

Apocryphal \A*poc"ry*phal\, a.
   1. Pertaining to the Apocrypha.
      [1913 Webster]

   2. Not canonical. Hence: Of doubtful authority; equivocal;
      mythic; fictitious; spurious; false.
      [1913 Webster]

            The passages . . . are, however, in part from
            apocryphal or fictitious works.       --Sir G. C.
                                                  Lewis.
      [1913 Webster]
    

117 Moby Thesaurus words for "apocryphal":
      Albigensian, Arian, Catharist, Donatist, Ebionitist, Erastian,
      Gnostic, Jansenist, Jansenistic, Jovinianist, Jovinianistic,
      Lollard, Manichaean, Monophysite, Monophysitic, Montanist,
      Montanistic, Pelagian, Sabellian, Waldensian, Wyclifite, affected,
      antinomian, artificial, assumed, bastard, bogus, brummagem,
      colorable, colored, counterfeit, counterfeited, distorted,
      doubtful, dressed up, dubious, dummy, emanationist, embellished,
      embroidered, erroneous, ersatz, factitious, fake, faked,
      fallacious, false, falsified, feigned, fictitious, fictive,
      garbled, heretical, heterodox, hylotheist, hylotheistic,
      illegitimate, imitation, inaccurate, incorrect, junky,
      make-believe, man-made, mock, nonofficial, nonorthodox,
      open to question, pantheist, pantheistic, perverted, phony,
      pinchbeck, pretended, pseudo, put-on, quasi, queer, questionable,
      self-styled, sham, shoddy, simulated, so-called, soi-disant,
      spurious, supposititious, synthetic, tin, tinsel, titivated,
      twisted, unaccepted, unapproved, unattested, unauthentic,
      unauthenticated, unauthoritative, uncanonical, uncertified,
      unchecked, unconfirmed, uncorroborated, undemonstrated, ungenuine,
      unnatural, unofficial, unorthodox, unproved, unreal, unscriptural,
      unsound, untrue, unvalidated, unverified, unwarranted, warped,
      wrong