1 B2 idiomatic slang
To be or become completely unconscious, typically after being hit or knocked out.
"One punch and he was spark out on the floor."
inseparable
spark out
B2 informal inseparable intransitive
To be completely unconscious or fast asleep; to fall unconscious suddenly.
In plain English
To be completely asleep or knocked out, so that you don't notice anything.
What does "spark out" mean?
2 meanings, ordered from most common to least. Color-coded by CEFR level.
2 B2 idiomatic informal
To be deeply and completely asleep.
"Don't worry about waking him — he's been spark out since nine o'clock."
inseparable
Usage tip
Primarily British and Australian slang. Often used to describe someone who has fallen into a very deep sleep, or who has been knocked unconscious. Also used as an adjective: 'spark out' meaning completely unconscious.
Words that pair with "spark out"
Natural word combinations native speakers use most often.
completely fast already instantly within minutes
How to conjugate "spark out"
The five tense forms you'll use most often.
Base
spark out
I/you/we/they
3rd person
sparks out
he/she/it
Past simple
sparked out
yesterday
Past participle
sparked out
have + pp
-ing form
sparking out
continuous
Hear "spark out" in the wild
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Other ways to say "spark out"
Swap in when you want variety — tap a linked one to explore it.
dead to the world fast asleep knocked out out cold passed out unconscious
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