Pronunciation: nê-fæ-ri-ês • Hear it! Meaning: Wicked, wicked, wicked! Notes: This Good Word has an adverb, nefariously, and the noun, nefariousness.

What type of word is nefarious?

extremely wicked or villainous; iniquitous: a nefarious plot.

Is nefarious an adjective?

How does the adjective nefarious differ from other similar words? ... While all these words mean "highly reprehensible or offensive in character, nature, or conduct," nefarious suggests flagrant breaching of time-honored laws and traditions of conduct.