[1] : The Collaborative International Dictionary of English v.0.48

wickedness \wick"edness\, n.
   1. the quality or state of being wicked; departure from the
      rules of the divine or the moral law; evil disposition or
      practices; immorality; depravity; sinfulness.
      1913 webster

            god saw that the wickedness of man was great. --gen.
                                                  vi. 5.
      1913 webster

            their inward part is very wickedness. --ps. v. 9.
      1913 webster

   2. a wicked thing or act; crime; sin; iniquity.
      1913 webster

            i'll never care what wickedness i do,
            if this man comes to good.            --shak.
      1913 webster

[2] : WordNet (r) 2.0

wickedness
     n 1: morally objectionable behavior syn: evil, immorality, iniquity
     2: absence of moral or spiritual values; "the powers of
        darkness" syn: iniquity, darkness, dark
     3: the quality of being wicked syn: nefariousness, vileness
     4: estrangement from god syn: sin, sinfulness
see also:
evil immorality iniquity darkness dark nefariousness 
vileness sin sinfulness 

[3] : Moby Thesaurus II by Grady Ward, 1.0

94 moby thesaurus words for "wickedness":
   aberrance, aberrancy, abnormality, arrantness, badness, baseness,
   bitchiness, corruption, criminality, cussedness, damnability, debt,
   delinquency, depravity, deviance, deviancy, devilishness,
   devilment, devilry, deviltry, evil intent, evilness, fiendishness,
   flagitiousness, foulness, godlessness, harmfulness, hatefulness,
   heinousness, hellishness, illegality, immorality, impiety,
   improperness, impropriety, inaccuracy, inappropriateness,
   inauspiciousness, incorrectness, indecorousness, indecorum,
   inexpedience, inferiority, infraction, iniquitousness, invalidity,
   invidiousness, irreligion, maleficence, malevolence, malice,
   malice aforethought, malice prepense, maliciousness, malignance,
   malignancy, malignity, meanness, moral badness, nastiness,
   naughtiness, nefariousness, noxiousness, orneriness, peccancy,
   rankness, reprehensibility, sin, sinfulness, un-christliness,
   unangelicalness, unchristianliness, unfavorableness, unfitness,
   unfittingness, ungodliness, unhealthiness, unholiness, unkindness,
   unlawfulness, unpleasantness, unrighteousness, unsaintliness,
   unseemliness, unskillfulness, unsuitability, vice, viciousness,
   vileness, villainousness, violation, wrong, wrongfulness,
   wrongness

Wickedness >> W Words
Wickedness, definition of term: Wickedness
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