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somnambulate

[som-nam-byuh-leyt, suh m-] /sɒmˈnæm byəˌleɪt, səm-/
verb (used without object), somnambulated, somnambulating.
1.
to walk during sleep; sleepwalk.
Origin
1825-1835
1825-35; < Latin somn(us) sleep + ambulate
Related forms
somnambulant, adjective, noun
somnambulation, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for somnambulate

somnambulate

/sɒmˈnæmbjʊˌleɪt/
verb
1.
(intransitive) to walk while asleep
Derived Forms
somnambulance, noun
somnambulant, adjective, noun
somnambulation, noun
somnambulator, noun
Word Origin
C19: from Latin somnus sleep + ambulāre to walk
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
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Word Origin and History for somnambulate
v.

1821, probably a back-formation from somnambulism. Related: Somnambulated; somnambulating.

Online Etymology Dictionary, © 2010 Douglas Harper
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