sleepless Meaning, definition in Cambridge English Dictionary
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Meaning of "sleepless" - English Dictionary

See all translations

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)
What is the pronunciation of sleepless?
Add Cambridge dictionaries to your browser to your website

Definitions of “sleepless” in other dictionaries

Word of the Day
straight

the straight part of a racetrack (= the track on which competitors race)

Word of the Day

Are you a glass-half-full person? (Everyday Idioms)
Are you a glass-half-full person? (Everyday Idioms)
by Kate Woodford,
July 29, 2015
A reader of this blog recently asked for a post on idioms that are used in everyday English. This seemed like a reasonable request. After all, if you are going to make the effort to learn a set of English idioms, you want those idioms to be useful. The question, then, was

Read More 

exoskeleton noun
exoskeleton noun
July 27, 2015
a robotic device which goes around the legs and part of the body of a person who cannot walk and allows them to move independently and in an upright position The device, known as an exoskeleton, is strapped to the outside of a person’s limbs and can then be controlled by them.

Read More