淫乱

1. Origins, structure, and basic meaning

• Structure: 淫乱(いんらん) is a negative judgment describing sexual conduct as lewd or dissolute.
• Basic usage: It states that a character is portrayed as a lewd aristocrat in a play.
  • 劇中ではその人物が淫乱な貴族として描かれている。

2. Common pitfalls and similar expressions

• An evaluative expression
  • 性的(せいてき) can neutrally describe something as sexual or sex-related. 淫乱 carries a strong negative judgment and can be derogatory when applied to a person.