Dictionary
sleepless
adjective sleep·less \ˈslēp-ləs\
: without sleep
: not able to sleep
Full Definition of SLEEPLESS
1
: not able to sleep <lay sleepless with fever>
2
: affording no sleep <sleepless nights>
3
: unceasingly active or operative <sleepless casinos>
— sleep·less·ly adverb
— sleep·less·ness noun
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First Known Use of SLEEPLESS
15th century
Related to SLEEPLESS
- Synonyms
- awake, insomniac, wakeful, wide-awake
- Antonyms
- asleep, dormant, dozing, napping, resting, sleeping, slumbering, unawakened
Medical Dictionary
sleepless
adjective sleep·less \ˈslē-pləs\
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