Meaning of the word sleepless in English

What does sleepless mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

sleepless

US /ˈsliːp.ləs/
UK /ˈsliːp.ləs/

Adjective

1.

without any sleep:

Example:
I've spent so many sleepless nights worrying about him.
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