What does "dress down" mean?

To wear casual clothes To dress informally.

How do you use "dress down" in a sentence?

Friday is dress down day. She dressed down for the occasion. Feel free to dress down.

Phrasal Verb BritishAmericanAustralian ★★★★☆ Common Neutral

Meaning: To wear casual clothes

穿便装、穿休闲装

Vestirse informal, ir de sport

カジュアルな服を着る、普段着を着る

캐주얼하게 입다, 편한 옷을 입다

To dress informally.

穿非正式的服装。

Vestirse de manera informal.

くだけた服装をすること。

격식 없이 편하게 옷을 입다.

Base verb: dress

Particle: down

Separable: No — the verb and particle stay together

Friday is dress down day.
周五是便装日
El viernes es día de ropa informal
金曜日はカジュアルデーだ
금요일은 캐주얼 복장의 날이다
She dressed down for the occasion.
她为这个场合穿了便装
Ella se vistió informal para la ocasión
彼女はその場に合わせてカジュアルな服装にした
그녀는 그 자리에 맞게 캐주얼하게 입었다
Feel free to dress down.
可以随意穿便装
Siéntete libre de ir informal
カジュアルな服装でどうぞ
편한 옷차림으로 오세요

Context: casual, clothing, informal

Tone: relaxed

From wearing less formal clothes.

Era: Modern

Generation: All ages

Social background: Universal