Definition of nefandous in English:

nefandous

adjective

rare, archaic
  • Not to be spoken of, unmentionable; abominable, atrocious.

Origin

Mid 17th century; earliest use found in James Howell (?1594–1666), historian and political writer. From classical Latin nefandus wicked, impious, abominable + -ous.

Pronunciation

nefandous

/nɪˈfandəs/