非行

1. Origins, structure, and basic meaning

• Structure: 非行, read ひこう, combines wrong or improper 非 with conduct 行 as a name for misconduct.
• Basic usage: It often refers to a young person's behavior that violates social rules, as in 少年の非行.

2. Common pitfalls and similar expressions

• Distinguishing meanings
  • The homophone 飛行 means flight, whereas 非行 means delinquent or improper conduct.