(1)邪悪な人
(2)邪悪であるか凶悪な人
(3)someone who does evil deliberately
(4)a wicked or evil person; someone who does evil deliberately
さらに詳しく
(1)道徳的、もしくは精神的な価値のないこと
(2)absence of moral or spiritual values; "the powers of darkness"