stay up late
stay up late
To remain awake past one's usual or required bedtime. I had to stay up late doing my taxes because I left them until the last minute again. We let Johnny stay up late last night so he could count down to midnight with us for New Year's Eve.
stay up late
to remain awake and out of bed later than usual. I am in the practice of staying up late. I can't stay up late three nights in a row.