Nefarious – Morally bad; wicked
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.