stay up

present singular third person stays up · participle present staying up · participle past stayed up · past stayed up

1. Used other than figuratively or idiomatically: see stay, up.

   These trousers are too big around the waist. They won't stay up.

2. intransitiveTo remain awake; to not go to bed.

   She stayed up past her bedtime.

   2 more examples

   My plane leaves at 6:00 in the morning, so I plan to stay up until then and sleep on the plane.

   Some nights, I stay up cashing in my bad luck Some nights, I call it a draw

   2012, Jeff Bhasker, Nate Ruess, Andrew Dost, Jack Antonoff, “Some Nights”, in Some Nights), performed by fun.

3. euphemisticintransitiveTo maintain an erection.

   He told his lover he has a problem staying up.