nefarious [ni- fair-ee- uhs] Synonyms Examples Word Origin See more synonyms for nefarious on Thesaurus.com extremely wicked or villainous; iniquitous: a nefarious plot. Origin of nefarious 1595–1605;
wicked, vile, equivalent to
offense against divine or moral law (
negative prefix +
law, right) +
, with intervocalic
r Related forms ne·far·i·ous·ly, adverb ne·far·i·ous·ness, noun un·ne·far·i·ous, adjective un·ne·far·i·ous·ly, adverb un·ne·far·i·ous·ness, noun
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Related Words for nefariousness horror
outrageousness Examples from the Web for nefariousness Historical Examples of nefariousness
Mary gratified her eager mind by careful studies in this chosen line of
There was a
nefariousness about the new suggestion that proved very attractive in Blentmouth.
nefariousness of the scheme thus revealed infuriated Barmouth. British Dictionary definitions for nefariousness Derived Forms nefariously, adverb nefariousness, noun Word Origin for nefarious
C17: from Latin
nefārius, from nefās unlawful deed, from nē not + fās divine law
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for nefariousness nefarious adj.
c.1600, from Latin
nefarius "wicked, abominable, impious," from nefas "crime, wrong, impiety," from ne- "not" (see un-) + fas "right, lawful, divinely spoken," related to fari "to speak" (see fame (n.)). Related: Nefariously.
Online Etymology Dictionary, © 2010 Douglas Harper