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[sleep-waw-king] /ˈslipˌwɔ kɪŋ/
the act or state of walking, eating, or performing other motor acts while asleep, of which one is unaware upon awakening; somnambulism.
of or relating to the state of walking while asleep; somnambulistic.
Origin of sleepwalking
1790-1800; sleep + walking
Related forms
sleepwalker, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for sleepwalker
Contemporary Examples
Historical Examples
  • With the indifference to danger of a sleepwalker the Minnie Williams marched across the starlit harbor.

  • But that girl was like a sleepwalker—not to be talked to, I mean, like you could talk to persons.

    Somewhere in Red Gap Harry Leon Wilson
  • The girl moved with the absorption of a sleepwalker beside Jude whose shufflings bespoke nervous tension.

    Joyce of the North Woods Harriet T. Comstock
  • But she went confidently on like a sleepwalker who saves himself from dangers that would be death to him in waking.

    Between The Dark And The Daylight William Dean Howells
  • When at length the candle was lighted, he took it in his hand and went into the parlour like a sleepwalker.

    The Manxman Hall Caine
  • He went about extinguishing the gas as aimlessly and mechanically as a sleepwalker, unaware of the things he was touching.

    The Cottage of Delight Will N. Harben
  • And at those words I rose mechanically, and like a sleepwalker.

    A Strange Story, Complete Edward Bulwer-Lytton
  • Emil overtook her and catching her by the shoulders shook her gently, as if he were trying to awaken a sleepwalker.

    O Pioneers! Willa Cather
  • She came into the room with her eyelids so demurely lowered that she might have been taken for a sleepwalker.

sleepwalker in Medicine

sleepwalking sleep·walk·ing (slēp'wô'kĭng)
The act of walking or performing another activity associated with wakefulness while asleep or in a sleeplike state. Also called noctambulism, somnambulism.

sleep'walk' v.
sleep'walk'er n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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