spark out

spark out adjective: completely asleep or unconscious.

Adjective

spark out (not comparable)

(UK, slang) Completely asleep or unconscious.
- I steamed in and was promptly knocked spark out by one of them. I came round just in time to see them running for the exit.2008, Michael Lutwyche and Steven Fowler, Hardcore, VHC Publishing, "Birmingham City Vs Aston Villa Division 2 12th December 1987"
- You were asleep. I came home from work and saw you. I thought you might not have intended to spend the whole night spark out in the car.2011, Val McDermid, The Retribution, Atlantic Monthly Press, page 7

spark out (third-person singular simple present sparks out, present participle sparking out, simple past and past participle sparked out)

(slang, transitive) To render unconscious; to knock out.
- "I didn't care if I sparked him out or it went 12 rounds, but people wanted to see him unconscious."2017 October 29, Nick Parkinson, “Eddie Hearn wants Anthony Joshua to make three title defences in 2018”, in espn.co.uk
- A YOUNG man from Ellesmere Port had to be sprayed with tear gas after he threatened to “spark out” a police officer, a court heard.2019 June 18, Steve Creswell, “Ellesmere Port man threatened to 'spark out' police officer in Chester”, in Chester Standard

Adjective
alternative form	sparko
Verb
third-person singular present	sparks out
present participle	sparking out
past participle	sparked out
past	sparked out

What does spark out mean?: Spark out means completely asleep or unconscious.
What part of speech is spark out?: Spark out can be an adjective or a verb.

Adapted from Wiktionary: spark out (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Cite this entry: “spark out.” Word.ws, https://word.ws/spark_out. Based on Wiktionary, CC BY-SA 4.0.