The word nefarious has a negative connotation and means something that is wicked, malicious or criminal. It can describe an action or behavior that is intentionally harmful or deceitful, often with the goal to cause damage or harm to others.
Usage examples
The mafia was known for its nefarious activities such as drug trafficking, extortion, and money laundering.
The hacker launched a nefarious cyber attack on the company's servers, stealing sensitive customer information.
The corrupt politician was involved in a nefarious scheme to embezzle public funds for personal gain.
The cult leader brainwashed his followers into carrying out nefarious acts, including kidnapping and murder.
The con artist devised a nefarious scheme to defraud unsuspecting individuals by promising them unrealistic returns on their investments.
The fact that the comments are identical isn't a sign of nefarious activity in and of itself, but the lack of a clear source for the message, the alphabetically - organized filings, the reported denials of those who are listed as commenters, and the sheer volume of comments listed in such a short time frame, raise questions about their legitimacy. (businessinsider.com)
Facebook's former VP of ads has weighed in on the ongoing disaster involving his company's apparent negligence in allowing data on as many as 50 million users to be used for nefarious purposes by Camb (techcrunch.com)
Talk started with the legendary Tim Hortons franchise before leading to the less famous Pizza Pizza, where Payne told me there were rumblings of nefarious activities on the part of some franchise owners. (artnews.com)