noun
great treachery; atrocious person
Rare literary noun for extreme betrayal or a deeply treacherous individual. Not used in everyday speech.
彼の行為はまさに梟悪と呼ぶべきものだった。
His act was truly what one should call great treachery.
歴史書には、あの梟悪の名が記されている。
The name of that atrocious person is recorded in the history book.