The Collaborative International Dictionary of English v.0.48:

Discrepant \Dis*crep"ant\, a. [L. discrepans, -antis, p. pr. of
   discrepare to sound differently or discordantly; dis- +
   crepare to rattle, creak: cf. OF. discrepant. See
   Crepitate.]
   Discordant; at variance; disagreeing; contrary; different.
   [1913 Webster]

         The Egyptians were . . . the most oddly discrepant from
         the rest in their manner of worship.     --Cudworth.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Discrepant \Dis*crep"ant\, n.
   A dissident. --J. Taylor.
   [1913 Webster]

WordNet (r) 3.0 (2006):

discrepant
    adj 1: not compatible with other facts [syn: discrepant,
           incompatible]
    2: not in agreement [syn: discrepant, inconsistent]
    3: not in accord; "desires at variance with his duty"; "widely
       discrepant statements" [syn: at variance(p), discrepant,
       dissonant]

Moby Thesaurus II by Grady Ward, 1.0:

113 Moby Thesaurus words for "discrepant":
   adversative, adverse, adversive, antagonistic, anti, antipathetic,
   antithetic, antonymous, assorted, at cross-purposes,
   at loggerheads, at odds, at variance, at war, balancing, clashing,
   compensating, conflicting, confronting, contradictory,
   contradistinct, contrapositive, contrarious, contrary, contrasted,
   contrasting, converse, counter, counterbalancing, counterpoised,
   countervailing, cranky, cross, dead against, departing, deviating,
   deviative, different, differentiated, differing, disaccordant,
   disagreeable, disagreeing, disconsonant, discordant, discrete,
   discriminated, disharmonious, disjoined, disparate,
   disproportionate, dissident, dissimilar, dissonant, distinct,
   distinguished, divergent, diverging, divers, diverse, diversified,
   eyeball to eyeball, grating, heterogeneous, hostile, immiscible,
   in disagreement, inaccordant, incompatible, incongruent,
   incongruous, inconsistent, inconsonant, inharmonious, inimical,
   inverse, irreconcilable, jangling, jarring, many, motley,
   multifarious, negative, obverse, opposed, opposing, opposite,
   oppositional, oppositive, oppugnant, out of accord, out of whack,
   perverse, poles apart, poles asunder, repugnant, reverse, separate,
   separated, several, squared off, unconformable, uncongenial,
   unequal, unharmonious, unlike, variant, varied, variegated,
   various, varying, widely apart, worlds apart