# unsleeping

> English word · Adjective

## Definitions
1. Not sleeping.
2. Remaining constantly alert.
3. Remaining constantly active.

## Etymology
From un- + sleeping.

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