Meaning & use
hit the sack
Last updated
Meanings
phraseidiominformal
To go to bed, usually because you are tired.
Grammar: Used as an intransitive verb phrase: it takes no object, and the subject is the person going to bed.
Patterns
- someone hits the sack
- time to hit the sack
- I'm going to hit the sack
It's almost midnight, so I think I'll hit the sack.
After the long drive, we hit the sack as soon as we got to the hotel.
You look exhausted — go hit the sack and we'll talk in the morning.
phrasefixed phraseinformal
Used to announce that you are going to bed now, often when saying goodnight.
Grammar: Said on its own as a short sentence, usually with 'I'm going to' or 'I'll'.
Patterns
- I'm going to hit the sack
- I'll hit the sack
Right, I'm going to hit the sack. See you tomorrow.
I'll hit the sack now — don't stay up too late.
Common combinations
- hit the sack early
- I want to hit the sack early tonight because I have an early flight.
- hit the sack late
- We hit the sack late after the party and slept until ten.
- time to hit the sack
- It's time to hit the sack; we have a busy day tomorrow.
- hit the sack for the night
- She hit the sack for the night as soon as the guests left.
- finally hit the sack
- He finally hit the sack at two in the morning.
Synonyms and how they differ
- go to bed
- The plain, neutral way to say this; use it in formal writing, where 'hit the sack' would sound too casual.
- turn in
- Also informal and means the same, but it is a little more old-fashioned and often used by older speakers.
- go to sleep
- Focuses on falling asleep rather than getting into bed, so it is not a perfect swap.
Opposites
Commonly confused: hit the sack or hit the hay?
hit the sack vs hit the hay
This means exactly the same thing and is equally informal; 'hit the sack' is simply the more common of the two in modern speech.
Practice
Which sentence uses 'hit the sack' correctly?
Choose one answer.
'Hit the sack' is a fixed phrase meaning 'go to bed', so it fits the sentence about being tired at nine o'clock. The other options treat 'hit' and 'sack' as separate words with their literal meanings, which is not how the idiom works.
Make it your own
Write a sentence using “hit the sack”, then check it and compare it with the examples above.