up at night
- idiom
- She's been feeling anxious lately, and it's been keeping her up at night.
- keeps you up at night
And then I stayed up at night thinking, why is that?
- And then I stayed up at night thinking, why is that?
- But that regret can keep you up at night and fuel the rumination.
- But if there's one thing that keeps me up at night, it's this.
- Doing lectures at Harvard keeps me up at night, you know.
- But what disturbs me even more and what keeps me up at night are all the gaps.
- Indifference means, though, that you weren't up at night wishing this would happen.
- And he said nothing keeps me up at night.
- Davey M asks what, if anything, keeps you up at night?
- The dream that keeps you up at night is the real dream you should be chasing.
- But yeah, I think anything keeps me up at night in a weird way.
- This is the point that just really keeps me up at night.
- Dave from Milwaukee asks what unanswered questions keep you up at night?
- But they needed that time away from it because it did keep them up at night.
Examples
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But I tell you what keeps me up at night, not knowing, not finding out.
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But if there's one thing that keeps me up at night, it's this.
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Does it keep you up at night?
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These were the things that were keeping me up at night.
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The kind of trouble that kept him up at night.
Fiction book (2001) -
Tell me, do you hate him enough that it keeps you up at night?
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But the thing that is keeping me up at night is how do we break this addiction to anger?
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What keeps you up at night pondering deep questions?
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But what disturbs me even more and what keeps me up at night are all the gaps.
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The fear that keeps you up at night or wakes you in a panic.
Blog text (22)
Synonyms
You feel very tired after staying awake all night
Antonyms
How Sleepless
Surface Forms
Morphology
The meaning 'unable to sleep during the night' is directly derivable from combining 'up' (not asleep) with the temporal phrase 'at night' — the preposition 'at' simply marks time. This is a common, compositional pattern (awake + time expression) found across languages, so a B1 learner who knows the constituent words will readily understand the MWE.
Etymology
Up at night comes from the simple image of being physically up while the night is dark because worries keep you awake. So, it means 'unable to sleep because of worry'.