# shirt-sleeve

> English word · Adjective

## Definitions
1. Having an informal, relaxed appearance or approach, particularly in business.
2. That allows working without the need of wearing a spacesuit.

## Etymology
The adjective sense is derived from the practice of taking one’s jacket off and relaxing in shirt sleeves.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/shirt-sleeve