insomnia

Part of speech: noun

Sleeplessness.

Part of speech: noun

Chronic inability to sleep.

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Usage examples "insomnia":

  1. Insomnia is a disease of the nerves or of the stomach, rather than the result of extreme emotion. - "An Ambitious Man", Ella Wheeler Wilcox.
  2. She talked about insomnia, she expatiated on the virtues of harmless drugs and beneficent specialists. - "Mortal Coils", Aldous Huxley.
  3. 127 Some of the more common symptoms of eye strain are nervousness, headache, insomnia, irritations of the eyelids, sensitiveness to bright light, and pain in the use of the eyes. - "Physiology and Hygiene for Secondary Schools", Francis M. Walters, A.M..