不睡觉

not sleep

→ 不
phrase Rare #18,889
not sleep Can mean staying awake or not going to bed, depending on context.
CH: 你今天怎么不睡觉?
EN: Why aren't you sleeping today?

我宁愿不睡觉也要看完这本书。

I'd rather not sleep than stop reading until I've finished this book.

大半夜不睡觉

Why are you still awake at this hour?

— 流浪地球 (2019)

我看到你你不吃、不喝、不睡觉

I see that you don't eat, drink, or sleep.

— 指环王2:双塔奇兵 (2002)

你还不睡觉?

You're still not asleep?