sack out

verb

To fall asleep, usually from implied exhaustion.

“The kids sacked out in the back seat before we made it home.”

Similar
drop offdoze offfall asleepgo to bedturn inbedcrawl inkip down
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

verbsack out (third-person singular simple present sacks out, present participle sacking out, simple past and past participle sacked out)

present singular third person sacks out · participle present sacking out · participle past sacked out · past sacked out

  1. slangTo fall asleep, usually from implied exhaustion.

    The kids sacked out in the back seat before we made it home.

    Synonyms: drop off, doze off, fall asleep

Synonyms & antonyms

verbTo fall asleep, usually from implied exhaustion.

Similar
drop offdoze offfall asleep

More synonyms by meaning

verbprepare for sleep

Similar
go to bedturn inbedcrawl inkip downhit the hayhit the sackgo to sleepretire
Broader
travelgomove
Also see
beddoze offdrop offfall asleepgo to bedgo to sleephit the hayhit the sackkip downnod offretireturn in

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

Outgrowth of the earlier idiom, to hit the sack, with possible influences from other senses of to sack (“tackle, pillage”, verb), and to sock (“hit, slam”, verb), providing an implication that sleep has been thrust upon a person.

Full word history & related roots →

Translations

Finnish sammahtaa
  • sammahtaafall asleep unintentionally
French coucher
  • coucherfall asleep unintentionally
Greek την πέφτω για ύπνο
  • την πέφτω για ύπνο (tin péfto gia ýpno)fall asleep unintentionally
Italian assopirsi, appisolarsi
  • assopirsifall asleep unintentionally
  • appisolarsifall asleep unintentionally
Polish zdrzemnąć się, odpływać
  • zdrzemnąć sięfall asleep unintentionally
  • odpływaćfall asleep unintentionally
  • odpłynąćfall asleep unintentionally
Cite this entry
APA

sack out. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/sack%20out

MLA

“sack out.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sack%20out. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “sack out,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/sack%20out.

Source: sack out on Wiktionary, CC BY-SA 4.0.