Bad Person, Villain, Evildoer, Bad Guy, Wicked Person, Evil Person
noun, の adjective
A bad person is a bad person.
あくにん
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
あいつは悪人だが、花が大好きなガーデニングのプロなんだ。
He's a bad guy, but he's a gardening professional who loves flowers.
この世界に生まれつきの悪人なんていないよ。
Nobody in the world was born a vicious person.
お前、本当に善人と悪人を区別することが可能だと思っているのか？
Do you really think it’s possible to differentiate between good people and bad people?