悪人

1. Origins, structure, and basic meaning

• Structure: 悪人(あくにん) means someone who does bad things or is judged morally bad.
• Basic usage: It states that even the villain in a story had a sad past.
  • 物語の悪人にも悲しい過去があった。

2. Common pitfalls and similar expressions

• Judging a person and naming a story role
  • 悪役(あくやく) denotes a villainous role or character in a work. 悪人 centers on a judgment of conduct or character and can also be applied to real people.