noun
Refers to a dress code that is less formal than semi-formal, often used in invitations or event descriptions. In Japanese, it is a loanword from English.
パーティーのドレスコードはインフォーマルドレスです。
The dress code for the party is informal dress.
Variant with interpunct; less common but still encountered.
カジュアル is a broader term for casual style, while インフォーマルドレス specifically refers to a dress code category, often slightly more polished than everyday casual.
Loanword from English 'informal dress'.