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be up all night — to stay awake and not sleep during the entire night, usually because of work, study, worry, or entertainment

Part of speech: VERB

Definition: to stay awake and not sleep during the entire night, usually because of work, study, worry, or entertainment

Pronunciation (IPA): /bi ʌp ɔːl naɪt/

Example Sentences

  • I was up all night because my cat kept meowing at the door like a tiny alarm clock.
  • He was up all night reviewing grammar rules for the CSAT English exam.
  • We were up all night binge-watching a drama, and now we both look like zombies.

be up all night

VERB

[/bi ʌp ɔːl naɪt/]

to stay awake and not sleep during the entire night, usually because of work, study, worry, or entertainment

He had to be up all night finishing the project before Monday's deadline.
💡 Concept

He had to be up all night finishing the project before Monday's deadline.

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🎤Pronunciation

🇺🇸 US/bi ʌp ɔːl naɪt/
🇬🇧 UK/biː ʌp ɔːl naɪt/

🌳Etymology

Origin

This phrase derives from spatial metaphors fundamental to English, where 'up' conventionally represents wakefulness and consciousness, while 'down' represents sleep. The expression combines the verb 'be' with the adverbial particle 'up' (meaning awake or out of bed) and the temporal phrase 'all night' to create an idiom denoting continuous wakefulness throughout the night.

Breakdown

be (auxiliary verb indicating state) + up (adverbial particle meaning awake/vertical position, figuratively alert) + all (totality) + night (temporal noun). The spatial metaphor 'up' = awake originates from the physical association of standing/sitting upright with wakefulness.

🎵Rhyme

light
night
fight
right

🔗Collocations

be up all night studying
be up all night worrying
stay up all night
up all night with a baby
up all night watching movies
pull an all-nighter

📝Examples

😄 Fun example

“I was up all night because my cat kept meowing at the door like a tiny alarm clock.”

“He was up all night reviewing grammar rules for the CSAT English exam.”

😄 Fun example

“We were up all night binge-watching a drama, and now we both look like zombies.”

“The new parents were up all night taking turns comforting the crying baby.”

📚Related Words

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