adverb
- in an extremely wicked or villainous manner
Usage: formal
Examples
- The villain nefariously plotted to steal the crown jewels.
- She smiled nefariously as she revealed her secret plan.
- The corrupt official nefariously accepted bribes from multiple companies.
- He nefariously manipulated the evidence to frame an innocent person.
- The spy nefariously gathered classified information for enemy agents.
- The dictator nefariously suppressed all opposition to his rule.