Similar words: pay up, lay up, stay, dry up, hurry up, star, stand, stare. Meaning: v. not go to bed.
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1. Did you stay up late last night?
2. These sticks are not strong enough to stay up.
3. Afterwards she relented and let the children stay up late to watch TV.
4. When I was younger I could stay up all night and not get tired.
5. I used to stay up late with my mom and watch movies.
6. She could always sweet-talk Pamela into letting her stay up late.
7. I'm letting you stay up late, just this once.
8. Shall we stay up till he comes?
9. I let the kids stay up late on Fridays.
10. Can I stay up late tonight?
11. You can stay up late if you're good.
12. I'm surprised that some of these ancient buildings stay up so long as they do.
13. I'll stay up all night, if necessary, to get it finished.
14. My trousers only stay up if I wear a belt.
15. She promised the children they could stay up for their favourite TV programme.
16. I just poop out if I stay up too late.
17. If necessary, the airship can stay up there for days to keep out of danger.
18. I'm surprised some of those cheap houses stay up at all.sentencedict.com/stay up.html
19. I want to stay up tonight and watch the late show.
20. Never go to bed mad. Stay up and fight. Phyllis Diller 
21. I hope we stay up there.
22. They both would stay up for a while yet.
23. Didn't you even stay up on election night?
24. The Huskies would be advised to stay up late working on showing up early.
25. OK, you can stay up till 11, but just this once.
26. I will make this radio work even if I have to stay up all night.
27. The nights I don't dream about you are the nights I stay up thinking of you.
28. Put on your lifejacket, which would help you to stay up if you fall out of the boat.
29. He has to wear a belt to make his trousers stay up.
30. Kyle has the neatest mom - she lets him stay up late on the weekends.