- extremely wicked or villainous; iniquitous: a nefarious plot.
Origin of nefarious
SynonymsSee more synonyms for on Thesaurus.com
Examples from the Web for nefarious
Sometimes politicians oppose reform for nefarious reasons—to protect a special interest or a major donor, for example.Can the U.S. Government Go Moneyball?
Peter Orszag, Jim Nussle
December 23, 2014
The Arabs offered the Nazis a haven, as well as a market for all their nefarious dealings in arms and black market currency.Hitler’s Henchmen in Arabia
December 7, 2014
Rumors swirled that the McStays had gone into Mexico and were involved in nefarious dealings with drug cartels.Family's Best Friend Charged With Murdering Them All
November 7, 2014
But Green-Wood is more famous for its nefarious residents, those of the drug-peddling, political-swindling, hit-men variety.Brooklyn’s Gangster Graveyard
October 23, 2014
Greece claims they were looted from the Parthenon by a nefarious British Indiana Jones character in the early 1800s.Can Amal Clooney Save Greece’s Antiquities?
October 15, 2014
Nay, they are neither; but, nevertheless, their errand is a nefarious one.Camps, Quarters and Casual Places
They were probably out on the trail pursuing their nefarious calling.The Twins of Suffering Creek
Might she not be the tool, consciously or unconsciously, of a nefarious plot?The Crevice
William John Burns and Isabel Ostrander
It is the duty of patriotic Swedes to thwart this nefarious project.England and Germany
Emile Joseph Dillon
Let us see then if you'll dare to persist in this nefarious scheme.Arthur O'Leary
Charles James Lever
- evil; wicked; sinful