Source : Webster's Revised Unabridged Dictionary (1913)

Wrongdoing \Wrong"do`ing\, n.
   Evil or wicked behavior or action.

Source : WordNet®

wrongdoing
     n 1: departure from what is ethically acceptable [syn: {error}]
     2: activity that transgresses moral or civil law; "he denied
        any wrongdoing" [syn: {wrongful conduct}, {misconduct}, {actus
        reus}]