stay up
verb1
Used other than figuratively or idiomatically: see stay, up.
- These trousers are too big around the waist. They won't stay up.
2
To remain awake; to not go to bed.
- My plane leaves at 6:00 in the morning, so I plan to stay up until then and sleep on the plane.
- She stayed up past her bedtime.
1 more example
- Some nights, I stay up cashing in my bad luck Some nights, I call it a draw2012, Jeff Bhasker, Nate Ruess, Andrew Dost, Jack Antonoff, “Some Nights”, in Some Nights), performed by fun.:
3
Euphemistic To maintain an erection.
- He told his lover he has a problem staying up.
- Derived terms
- stay up late