insomnia definition

  • noun:
    • Chronic incapacity to fall asleep or stay asleep for a sufficient amount of time.
    • A sleeping disorder that's known for its outward indications of unrest and incapacity to sleep.
    • Lack of sleep; incapacity to sleep, especially when persistent; wakefulness; sleeplessness.
    • insomnia; failure to sleep, particularly when persistent.
    • an inability to sleep; persistent insomnia

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