佞ねい悪あくMeanings1na-adjective, nounperverseness; perverse personRare literary term for a twisted or perverse nature, or a person with such a character. Not used in everyday speech.古ふるい文ぶん献けんでは、佞ねい悪あくな人じん物ぶつとして描えがかれている。In old documents, he is depicted as a perverse person.