discrepancy (n.) Look up discrepancy at Dictionary.com
mid-15c. (discrepance), from Latin discrepantia "discordance, discrepancy," from discrepantem (nominative discrepans), present participle of discrepare "sound differently, differ," from dis- "apart, off" (see dis-) + crepare "to rattle, crack" (see raven). Related: Discrepancies.