unchallenged

from WordNet (r) 3.0 (2006)

unchallenged
    adj 1: generally agreed upon; not subject to dispute; "the
           undisputed fact" [syn: {undisputed}, {unchallenged},
           {unquestioned}]

from The Collaborative International Dictionary of English v.0.48

Unchallenged \Unchallenged\
   See {challenged}.

from Moby Thesaurus II by Grady Ward, 1.0

29 Moby Thesaurus words for "unchallenged":
      agreeing, at one, at one with, beyond question,
      carried by acclamation, concordant, concurrent, consentaneous,
      doubtless, in agreement, indubious, like-minded, of a piece,
      of one accord, of one mind, past dispute, questionless, solid,
      unanimous, uncontested, uncontradicted, uncontroversial,
      uncontroverted, undisputed, undoubted, unopposed, unquestioned,
      with one consent, with one voice