sleepless night
noun phraseUK /ˈsliːpləs naɪt/
US /ˈsliːpləs naɪt/
A sleepless night is a night when you cannot fall asleep.
I had a sleepless night because of the loud storm outside.
OTHER MEANINGS
2. A night spent awake on purpose, often for work or worry.
She had a sleepless night finishing her project.
3. A night when sleep is broken by noise, illness, or excitement.
The baby's crying gave the whole family a sleepless night.
4. A night of little or no rest, often followed by daytime tiredness.
After a sleepless night, he felt sleepy all day.