The Collaborative International Dictionary of English v.0.48:
Wrongful \Wrong"ful\, a. Full of wrong; injurious; unjust; unfair; as, a wrongful taking of property; wrongful dealing. -- Wrong"ful*ly, adv. -- Wrong"ful*ness, n. [1913 Webster]WordNet (r) 3.0 (2006):
wrongfulness n 1: that which is contrary to the principles of justice or law; "he feels that you are in the wrong" [syn: wrong, wrongfulness] [ant: right, rightfulness]