sack out
B1 informal inseparable intransitive
In simple words
To go to bed or fall asleep, often quickly or comfortably.
Literal meaning: To get into a sack — 'sack' is slang for bed.
Meanings
1 B1
idiomatic
informal
To go to sleep, especially quickly or after being tired.
"After the long road trip, the kids sacked out as soon as we got home."
Grammar: inseparable
2 B1
idiomatic
informal
To nap or rest informally, often on a couch or non-bed surface.
"He sacked out on the living room floor while watching football."
Grammar: inseparable
Usage notes
Chiefly American English. 'Sack' as slang for bed dates back at least to early 20th-century American military usage.
Commonly used with
couch early late immediately finally
Forms
Base
sack out
I/you/we/they
3rd person
sacks out
he/she/it
Past simple
sacked out
yesterday
Past participle
sacked out
have + pp
-ing form
sacking out
continuous
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