ワイシャツ

わいしゃつ
noun
dress shirt
1. dress shirt, white shirt
A formal button-up shirt, typically worn with a suit. From 'white shirt' (though they come in various colors now).
I iron my dress shirt.
I wear a dress shirt at work.
I bought a dress shirt and tie.

ワイシャツ is a dress shirt, from the English "white shirt." Despite the etymology, they come in various colors.

ETYMOLOGY:
From "white shirt" → shortened to ワイシャツ in Japanese

ALTERNATIVE TERMS:

  • カッターシャツ: regional variant (Kansai area)
  • ドレスシャツ: dress shirt (English loanword)
  • Yシャツ: alternate spelling

COMMON EXPRESSIONS:

  • ワイシャツを()る: to wear a dress shirt
  • ワイシャツにアイロンをかける: to iron a dress shirt
  • 半袖(はんそで)ワイシャツ: short-sleeve dress shirt
  • 長袖(ながそで)ワイシャツ: long-sleeve dress shirt

BUSINESS ATTIRE:
ワイシャツ is standard business attire in Japan, typically worn with a suit (背広(せびろ)/スーツ) and tie (ネクタイ).