Black out
verb
To lose consciousness or fall asleep suddenly.
He blacked out from the extreme heat.
Often appears as...
- black out from exhaustion
- black out from pain
verb
To cover or make difficult to see with a black substance.
They blacked out the windows to prevent being seen.
Often appears as...
- black out windows
- black out a document
verb
To lose memory temporarily, especially during a period of excessive drinking.
He blacked out and didn't remember what happened last night.
Often appears as...
- black out after drinking
- black out and forget
Usage tips
Disapproving
Colloquial
verb
To stop or cause to stop functioning, especially electrical power.
The whole city blacked out after the storm.
Often appears as...
- black out power
- black out from a storm
Usage tips
Technical
verb
To suppress or censor certain information.
The government blacked out news about the protest.
Often appears as...
- black out news
- black out information
Usage tips
Disapproving
Academic
verb
To lose consciousness or fall asleep suddenly.
He blacked out from the extreme heat.
Often appears as...
- black out from exhaustion
- black out from pain
verb
To cover or make difficult to see with a black substance.
They blacked out the windows to prevent being seen.
Often appears as...
- black out windows
- black out a document
verb
To lose memory temporarily, especially during a period of excessive drinking.
He blacked out and didn't remember what happened last night.
Often appears as...
- black out after drinking
- black out and forget
Usage tips
Disapproving
Colloquial
verb
To stop or cause to stop functioning, especially electrical power.
The whole city blacked out after the storm.
Often appears as...
- black out power
- black out from a storm
Usage tips
Technical
verb
To suppress or censor certain information.
The government blacked out news about the protest.
Often appears as...
- black out news
- black out information
Usage tips
Disapproving
Academic
Definition 1 of 5
Pro Tip 1/2Health-Related
Used when someone loses consciousness due to health issues or external factors like heat.
She blacked out during the marathon.
Pro Tip 2/2Temporary State
Emphasizes it's a temporary loss of consciousness, not a long-term coma.
After fainting, he quickly blacked out but revived minutes later.
Pro Tip 1/2Health-Related
Used when someone loses consciousness due to health issues or external factors like heat.
She blacked out during the marathon.
Pro Tip 2/2Temporary State
Emphasizes it's a temporary loss of consciousness, not a long-term coma.
After fainting, he quickly blacked out but revived minutes later.
Pro Tip 1/2Health-Related
Used when someone loses consciousness due to health issues or external factors like heat.
She blacked out during the marathon.
Pro Tip 2/2Temporary State
Emphasizes it's a temporary loss of consciousness, not a long-term coma.
After fainting, he quickly blacked out but revived minutes later.
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