• synonyms


See more synonyms for sleepwalking on Thesaurus.com
  1. the act or state of walking, eating, or performing other motor acts while asleep, of which one is unaware upon awakening; somnambulism.
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  1. of or relating to the state of walking while asleep; somnambulistic.
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Origin of sleepwalking

First recorded in 1790–1800; sleep + walking
Related formssleep·walk·er, noun


verb (used without object)
  1. to engage in sleepwalking.
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  1. an act of sleepwalking; somnambulation.
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Origin of sleepwalk

First recorded in 1920–25; back formation from sleepwalking
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for sleepwalking

noctambulism, somnambulation, somnambulism, somnambulance

Examples from the Web for sleepwalking

Contemporary Examples of sleepwalking

Historical Examples of sleepwalking

British Dictionary definitions for sleepwalking


  1. (intr) to walk while asleepSee also somnambulism
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Derived Formssleepwalker, nounsleepwalking, noun, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

sleepwalking in Medicine


  1. The act of walking or performing another activity associated with wakefulness while asleep or in a sleeplike state.noctambulism somnambulism
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Related formssleepwalk′ v.sleepwalk′er n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.