{ , a. [ L. nefandus not to be spoken; ne not + fari to speak. ] Unfit to speak of; unmentionable; impious; execrable. [ Obs. ] “Nefand adominations.” Sheldon. “Nefandous high treason.” Cotton Mather. [ 1913 Webster ]
a. [ L. nefarius, fr. nefas crime, wrong; ne not + fas divine law; akin to fari to speak. See No, adv., and Fate. ] Wicked in the extreme; abominable; iniquitous; atrociously villainous; execrable; detestably vile. [ 1913 Webster ]