[ ni-fair-ee-uhs ]
/ nɪˈfɛər i əs /
extremely wicked or villainous; iniquitous: a nefarious plot.
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Origin of nefarious
1595–1605; < Latin nefārius wicked, vile, equivalent to nefās offense against divine or moral law (ne- negative prefix + fās law, right) + -ius -ious, with intervocalic s > r
SYNONYMS FOR nefarious
OTHER WORDS FROM nefarious
ne·far·i·ous·ly, adverbne·far·i·ous·ness, nounun·ne·far·i·ous, adjectiveun·ne·far·i·ous·ly, adverb
Words nearby nefarious
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for nefariousness
Mary gratified her eager mind by careful studies in this chosen line of nefariousness.Within the Law|Marvin Dana
The nefariousness of the scheme thus revealed infuriated Barmouth.The Intrusions of Peggy|Anthony Hope
There was a nefariousness about the new suggestion that proved very attractive in Blentmouth.Tristram of Blent|Anthony Hope
British Dictionary definitions for nefariousness
/ (nɪˈfɛərɪəs) /
evil; wicked; sinful
Derived forms of nefariousnefariously, adverbnefariousness, 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 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012