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]