The Collaborative International Dictionary of English v.0.48:

Discrepance \Dis*crep"ance\ (?; 277), Discrepancy
\Dis*crep"an*cy\, n.; pl. -ances, -ancies. [L. disrepantia:
   cf. OF. discrepance. See Discrepant.]
   The state or quality of being discrepant; disagreement;
   variance; discordance; dissimilarity; contrariety.
   [1913 Webster]

         There hath been ever a discrepance of vesture of youth
         and age, men and women.                  --Sir T.
                                                  Elyot.
   [1913 Webster]

         There is no real discrepancy between these two
         genealogies.                             --G. S. Faber.
   [1913 Webster]

WordNet (r) 3.0 (2006):

discrepancy
    n 1: a difference between conflicting facts or claims or
         opinions; "a growing divergence of opinion" [syn:
         discrepancy, disagreement, divergence, variance]
    2: an event that departs from expectations [syn: discrepancy,
       variance, variant]

Moby Thesaurus II by Grady Ward, 1.0:

92 Moby Thesaurus words for "discrepancy":
   antagonism, antipathy, antithesis, argumentation, balance,
   clashing, collision, conflict, confrontation, contradiction,
   contradistinction, contraindication, contraposition, contrariety,
   contrast, controversy, counterposition, credit, cross-purposes,
   deficit, departure, deviation, difference, disaccord,
   disaccordance, disagreement, disconformity, discongruity, discord,
   discordance, discordancy, discreteness, disharmony, disparity,
   dissemblance, dissension, dissent, dissidence, dissimilarity,
   dissimilitude, dissonance, distinction, distinctness, disunion,
   disunity, divergence, divergency, diversity, epact, faction,
   far cry, gap, heterogeneity, hostility, inaccordance,
   incompatibility, incongruity, inconsistency, inconsonance,
   inequality, inharmoniousness, inharmony, inimicalness,
   irreconcilability, jarring, lacuna, mixture, negation, net,
   nonconformity, odds, oppositeness, opposition, opposure,
   oppugnance, oppugnancy, otherness, perversity, polarity, remainder,
   repugnance, separateness, showdown, surplus, unconformity,
   unharmoniousness, unlikeness, unorthodoxy, variance, variation,
   variegation, variety



Bouvier's Law Dictionary, Revised 6th Ed (1856):

DISCREPANCY. A difference between one thing and another, between one writing
and another; a variance. (q.v.)
     2. Discrepancies are material and immaterial. A discrepancy is
immaterial when there is such a difference between a thing alleged, and a
thing offered in evidence, as to show they are not substantially the same;
as, when the plaintiff in his declaration for a malicious arrest averred,
that "the plaintiff, in that action, did not prosecute his said suit, but
therein made default," and the record was, that he obtained a rule to
discontinue. 4 M. & M. 2 5 3. An immaterial discrepancy is one which does
not materially affect the cause as, where a declaration stated that a deed
bore date in a certain year of our Lord, and the deed was simply dated "
March 30, 1701." 2 Salk. 658; 19 John. 49 5 Taunt. 707; 2 B. & A. 301; 8
Miss. R. 428; 2 M'Lean, 69; 1 Metc. 59; 21 Pick. 486.