stay up
phrasal verb
stayed up; staying up; stays up
Definition of stay up
: to continue to be awake past the time when one usually goes to bed
Don't stay up past your bedtime. She stayed up to watch the late movie.
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“Stay up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/stay%20up. Accessed 18 May. 2021.
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