Source : Webster's Revised Unabridged Dictionary (1913)

Corruptness \Cor*rupt"ness\, n.
   The quality of being corrupt.

Source : WordNet®

corruptness
     n 1: the state of being corrupt
     2: lack of integrity or honesty (especially susceptibility to
        bribery); use of a position of trust for dishonest gain
        [syn: {corruption}] [ant: {incorruptness}]