Definition of insomnia in English:


Syllabification: in·som·ni·a
Pronunciation: /inˈsämnēə


  • Habitual sleeplessness; inability to sleep.
    More example sentences
    • Fact sheets are on topics such as restless legs syndrome, insomnia, and sleep apnoea.
    • Now stress and anxiety are obvious factors in causing insomnia but insomnia is insidious.
    • So you need to get checked out by a good doctor who knows something about sleep and insomnia.
    sleeplessness, wakefulness, restlessness, inability to sleep



Pronunciation: /-nēˌak/
noun & adjective
More example sentences
  • Forget counting sheep - insomniacs count sleep, jealously, obsessively, the way some women count calories.
  • An insomniac who sleeps only three to four hours a night, her energy was legendary.
  • The insomniac is unable to get sufficient sleep for their daily needs.


early 17th century: from Latin, from insomnis 'sleepless', from in- (expressing negation) + somnus 'sleep'.

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