The Collaborative International Dictionary of English v.0.48:

Noncompliance \Non`com*pli"ance\, n.
   Neglect of compliance; failure to comply.
   [1913 Webster]

WordNet (r) 3.0 (2006):

noncompliance
    n 1: the failure to obey [syn: disobedience, noncompliance]
         [ant: abidance, compliance, conformation,
         conformity, obedience, obeisance]

Moby Thesaurus II by Grady Ward, 1.0:

92 Moby Thesaurus words for "noncompliance":
   abnegation, civil disobedience, contradiction, contrariety,
   declension, declination, declinature, declining, default,
   delinquency, denial, deprivation, dereliction, deviation,
   disaccord, disaccordance, disagreement, disallowance, disclaimer,
   disclamation, disconformity, disobedience, disregard, dissent,
   failure, frowardness, holding back, inaccordance, inattention,
   incongruity, inconsistency, indiscipline, indocility, infraction,
   infringement, inobservance, insubordination, intractability,
   lawbreaking, lawlessness, laxity, naughtiness, nay, negation,
   negative, negative answer, neglect, negligence, nix, no,
   nonacceptance, nonadherence, nonconcurrence, nonconformance,
   nonconformism, nonconformity, nonconsent, noncooperation,
   nonfeasance, nonfulfillment, nonobedience, nonobservance,
   nonperformance, omission, originality, oversight,
   passive resistance, protest, recalcitrance, recantation, recusance,
   recusancy, refractoriness, refusal, rejection, repudiation,
   retention, slight, thumbs-down, transgression, turndown,
   unconformity, uncooperativeness, unduteousness, undutifulness,
   unobservance, unsubmissiveness, unwillingness, violation,
   waywardness, willful disobedience, withholding