異い装そう

noun

unusual clothing; strange outfit; prohibited dress

Refers to clothing that is unconventional, strange, or against a dress code. The 'prohibited form of dress' sense is often used in contexts like school rules or formal settings.

• その学がっ校こうでは異い装そうは禁きん止しされている。

  Unusual clothing is prohibited at that school.

• 彼かれの異い装そうはパーティーで目め立だっていた。

  His strange outfit stood out at the party.