sleepless Meaning, definition in Cambridge English Dictionary
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Meaning of "sleepless" - English Dictionary

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sleeplessadjective [before noun]

uk   us   /ˈsliːp.ləs/
C1 without any sleep: I've spent so many sleepless nights worrying about him. [after verb] not able to sleep: Alone and sleepless, she stared miserably up at the ceiling.
sleeplessness
noun [U] uk   us   /-nəs/
Translations of “sleepless”
in Chinese (Traditional) 失眠的,不能成眠的, 失眠的,無法入睡的…
in Chinese (Simplified) 失眠的,不能成寐的, 失眠的,无法入睡的…
(Definition of sleepless from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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