stay up
US /steɪ ʌp/
UK /steɪ ʌp/
1.
to remain awake, especially late at night
:
•
I had to stay up late to finish my project.
•
Let's stay up and watch the stars.
2.
to remain standing or erect
:
•
The tent managed to stay up despite the strong winds.
•
Make sure the sign will stay up in the rain.