noun
the state of being unable to sleep
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Chronic sleeplessness can have serious consequences on one's physical and mental health.
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I've been struggling with sleeplessness lately and it's really taking a toll on me.
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I can't seem to shake off this sleeplessness, it's driving me crazy.
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The constant buzzing of thoughts in my mind led to a state of sleeplessness akin to being lost in a maze.