Definition
- B2
to retire to bed later than one's usual time
He stayed up working until 3 a.m. last night and feels extremely tired today.
We plan to stay up to watch the movie since we've been waiting for it for so long.
She likes to stay up studying before exams, even though it leaves her drowsy the next day.
In football, to remain within the same league division without being demoted to a lower one
The football team successfully stayed up this season without being relegated, much to the fans' delight.
Their performance has been outstanding, allowing the club to stay up in the same league division this year.
The club is working hard to stay up and avoid relegation.