Nefarious – Morally bad; wicked

(Pronounced ni-fair-ee-uhs)

To remember the definition of the word nefarious, use the following mnemonic:

Kneeing fairies (nefarious) is wicked.

Examples of nefarious in a sentence

The murderer's nefarious deed destroyed many innocent lives.

My father believes you all have a nefarious purpose here.

Gresham himself did not live to see the outcome of any of his nefarious schemes.