unquestionable

unquestionable
    adj 1: incapable of being questioned; "unquestionable authority"
           [ant: {questionable}]
    2: not counterfeit or copied; "an authentic signature"; "a bona
       fide manuscript"; "an unquestionable antique"; "photographs
       taken in a veritable bull ring" [syn: {authentic}, {bona
       fide}, {unquestionable}, {veritable}]
    3: not open to question; "an unquestionable (or unequivocal)
       loss of prestige"
    

Unquestionable \Un*ques"tion*a*ble\, a.
   1. Not questionable; as, an unquestionable title.
      [1913 Webster]

   2. Not inviting questions or conversation. [R.] --Shak.
      [1913 Webster] -- {Un*ques"tion*a*bly}, adv.
      [1913 Webster]
    

111 Moby Thesaurus words for "unquestionable":
      absolute, actual, admitting no question, ascertained, attested,
      authenticated, believable, bona fide, categorically true, certain,
      certified, clear, colorable, conceivable, conclusive, confirmable,
      confirmed, corroborated, credible, deep-seated, definite,
      demonstrable, demonstratable, demonstrated, dependable, determined,
      documentary, effectual, esoteric, established, factual, fiduciary,
      flat, genuine, historical, immanent, implanted, implicit,
      inalienable, inappealable, incontestable, incontrovertible,
      indisputable, indubitable, indwelling, infixed, ingrained,
      inherent, inner, internal, intrinsic, inward, inwrought,
      irreducible, irrefragable, irrefutable, manifest, not in error,
      objectively true, obvious, patent, plausible, positive, private,
      provable, proved, real, reliable, resident, secret, self-evident,
      subjective, substantiated, sure, sure-enough, tenable, testable,
      true, true as gospel, trustworthy, trusty, truthful, unalienable,
      unanswerable, unchallengeable, unconfutable, unconfuted,
      uncontestable, undeniable, undenied, undoubted, unequivocal,
      unerroneous, unexceptionable, unfallacious, unfalse, unimpeachable,
      unmistakable, unmistaken, unrefutable, unrefuted, up-and-down,
      validated, veracious, verifiable, verified, veritable, very,
      well-founded, well-grounded, worthy of faith