# conk out

> English word · Verb

## Definitions
1. To fall fast asleep; to sleep soundly.
2. To stop functioning.
3. To die.

## Etymology
Possibly an onomatopoeic imitation of the sound of a stalling internal combustion engine. Possibly coined by British motorcyclists circa 1910.

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