from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. One who suffers from insomnia.
  • adj. Having or causing insomnia.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. One who suffers an inability or difficulty sleeping; a sufferer from insomnia.
  • adj. Suffering from or pertaining to insomnia.

from The Century Dictionary and Cyclopedia

  • n. One who suffers from insomnia.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. experiencing or accompanied by sleeplessness
  • n. someone who cannot sleep


Sorry, no etymologies found.


  • And that's what we call insomniac math — three plus three equals eight.

    Late Night with Richie

  • Several weeks on the insomniac is unsteady on his feet, wracked by fevers, and drifting in an out of delirium as the body's vital organs begin to fail.

    The Family That Couldn't Sleep - Portobello Books

  • Old guys spend more time sitting up late after the family's asleep, and in these hours your old guy will plan and replan his upcoming expedition, put new laces on his wading shoes, tie flies, dress in all his Arctic gear in order to see what it's like to move around in, call another insomniac old guy and check out up-to-the-minute river conditions, and so on.

    The Daily Dish | By Andrew Sullivan

  • Science, the study describes how a genetic variation found in people who seem to need only about six hours 'sleep-compared to the often recommended 7½ to eight hours-was put into mice to create a colony of "insomniac" rodents.

    Impact Lab

  • ** sigh** If you looked up the word "insomniac" in the dictionary, my picture would be there.

    qdiosa Diary Entry

  • So about 15 months ago I decided that if I was going to be an insomniac, then I should at least do something productive with my time.

    John Malik: The Many Flaws of My First Novel

  • Even after an insomniac night, I still looked well-rested.

    Pore Man

  • Exeter crown court was told last week that an insomniac Devon businessman grew 165 cannabis plants in his garage in order to make "marijuana tea" for himself.

    In praise of… cherries

  • As have thousands of insomniac former couch potatoes, Budget Committee Chairman Paul Ryan, Majority Whip Kevin McCarthy and a crew of young Republicans have taken to the P90X workout routines with an ideological intensity.

    The Fight Against Government Flab Is Personal for These Politicians

  • Stewart Edward White: You didn't recommend him but I'm recommending you stay away from him unless your an insomniac.

    Booze, Martial Arts, Golf & Your Dad


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