The Collaborative International Dictionary of English v.0.48:

Uncontested \Uncontested\
   See contested.

WordNet (r) 3.0 (2006):

uncontested
    adj 1: not disputed and not made the object of contention or
           competition; "uncontested authority" [ant: contested]

Moby Thesaurus II by Grady Ward, 1.0:

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