Search Result for "nefariousness": 
Wordnet 3.0

NOUN (1)

1. the quality of being wicked;
[syn: nefariousness, wickedness, vileness, ugliness]

The Collaborative International Dictionary of English v.0.48:

Nefarious \Ne*fa"ri*ous\, a. [L. nefarius, fr. nefas crime, wrong; ne not + fas divine law; akin to fari to speak. See No, adv., and Fate.] Wicked in the extreme; abominable; iniquitous; atrociously villainous; execrable; detestably vile. [1913 Webster] Syn: Iniquitous; detestable; horrible; heinious; atrocious; infamous; impious. See Iniquitous. [1913 Webster] -- Ne*fa"ri*ous*ly, adv. -- Ne*fa"ri*ous*ness, n. [1913 Webster]
WordNet (r) 3.0 (2006):

nefariousness n 1: the quality of being wicked [syn: nefariousness, wickedness, vileness, ugliness]