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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:
Adv.1.nefariously - in a nefarious manner or to a nefarious degree; "nefariously involved in a conspiracy"
References in periodicals archive ?
At this point, we can see that the attacker nefariously used his knowledge of test generation so that the hardware Trojan would not be activated--and hence go undetected--during post-fabrication test.
The false belief that a 17-year-old who survived the Parkland massacre is actually a paid actor, or perhaps being nefariously coached by liberals to promote gun control, began on the fringe.
At one point she suggests that Trump deliberately and nefariously picked a public fight with Khizr and Ghazala Khan--a Pakistani-American couple whose son was killed in Iraq--to blunt the rollout of her economic plan.
hotel, the Nation of Islam leader accused the Jews of nefariously oppressing black Americans for profit.
Social media and the rise of movements such as the Everyday Sexism Project are platforms at the centre of what I hope is now a concerted effort to challenge those in power who exert that position nefariously.
More nefariously, as this worm is able to infect the embedded operating systems used in manufacturing systems and even medical devices, well- known corporations and public-health services have fallen victim to the attack or have had to suspend opera- tions to ensure they are not susceptible.
Having mentioned Tesla, regardless of whether you think "Autopilot" is a good or bad name or if you think that the well-publicized accidents involving (or allegedly involving) Autopilot are in some ways nefariously heinous, consider this from the Centers for Disease Control: "Every day, 28 people in the United States die in motor vehicle crashes that involve an alcohol-impaired driver.
138) Such engineering methods could, however, be nefariously used to produce toxic metabolites by engineering a yeast cell to produce a chosen toxin.
Now, the internet audience is nefariously targeting her.
The lies and manipulations of the nefariously criminal killer troika and its occult behind the scene corporate-finance handlers seem to be all persuasive.
Of particular interest are meditative studies of cardiac reactivity, the tendency of the cardiovascular system to become nefariously activated in response to stress (Travis 2009; Barnes 2004).
details, or, more nefariously, a desire to shift blame for hard choices