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Infamous by way of being extremely wicked.

[Latin nefārius, from nefās, crime, transgression : ne-, not; see ne in Indo-European roots + fās, divine law; see dhē- in Indo-European roots.]

ne·far′i·ous·ly adv.
ne·far′i·ous·ness n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nefariousness - the quality of being wickednefariousness - the quality of being wicked    
evilness, evil - the quality of being morally wrong in principle or practice; "attempts to explain the origin of evil in the world"
filthiness - moral corruption or pollution; "this deformity and filthiness of sin"
enormity - the quality of extreme wickedness


[nɪˈfɛərɪəsnɪs] Nvileza f
References in periodicals archive ?
8) For a thorough discussion of the nefariousness of interventionist monetary policy, see Rothbard ([1963] 2008).
Played by Mark Gatiss with just the right level of nefariousness one might expect from someone with a shadowy position in the British government, it's nonetheless a source of constant amusement to think that the brothers were loosely based on Niles and Frasier Crane from Frasier.
But Iran just ignores all evidence of defection and instead embraces a vision of Israel nefariousness.
Before Tet, and to some extent after, the frame for Vietnam War coverage was predominantly a Cold War context, which emphasized the power of US technology and the nefariousness of the Communist enemy, and which slotted combat footage of Vietnam into the heroic narrative told by the WWII combat film.
In fact, it is extremely hard to find a similar movement in the history of mankind that would parallel Zionism in its brutal ugliness and nefariousness, both at the theoretical and practical levels.
Richardson's masterstroke in his performance was to break the fourth wall, the viewer becoming both reluctant accomplice and horrified witness to his nefariousness thanks to his habit of making confidential asides to the camera.