repudiative

from WordNet (r) 3.0 (2006)

repudiative
    adj 1: rejecting emphatically; e.g. refusing to pay or
           disowning; "a veto is a repudiative act"

from Moby Thesaurus II by Grady Ward, 1.0

42 Moby Thesaurus words for "repudiative":
      abjuratory, abnegative, adversative, breakaway, contradicting,
      contradictory, contrary, creedless, denying, disaffirming,
      disallowing, disavowing, disbelieving, disclaiming, disowning,
      faithless, heretical, incredulous, irreligious, minimifidian,
      mugwumpian, mugwumpish, negative, negatory, nonbelieving,
      nullifidian, opposing, recanting, renunciative, renunciatory,
      repudiatory, repugnant, revocative, revocatory, schismatic,
      secessionist, separatist, unbelieving, unconfident, unconverted,
      unconvinced, without faith