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n. pl. som·nil·o·quies
The act or habit of talking in one's sleep.

[somni- + Latin loquī, to speak; see soliloquy.]

som·nil′o·quist n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(sɒmˈnɪləkwɪ) ,




n, pl -quies
(Psychology) rare the act of talking in one's sleep
[C19: from Latin somnus sleep + loqui to speak; compare soliloquy]
somˈniloquist n
somˈniloquous adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.somniloquy - uttering speech while asleepsomniloquy - uttering speech while asleep  
sleeping - the suspension of consciousness and decrease in metabolic rate
unconscious process, process - a mental process that you are not directly aware of; "the process of denial"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
From all this sleep talk, a renewed curiosity had sprung in my mind about sleep patterns, circadian rhythms, deep sleep versus REM sleep, and so on.
Arnulf also found that 24 percent of the sleep talk contained negative content, while 22 percent turned the air blue with swear words.
While the most common word said was "no", 24 per cent of sleep talk was found to contain negative content, and 22 per cent included 'nasty' language.
Sleep Talk "Sleep: The Third Pillar of Health,'' presented by neuroscientist Jeanne F.
The Sleep Talk Recorder, created by Swedish developer Martin Lindau, is designed to pick up noises while users sleep - anything from a slight murmur to a nightmarish scream - and begin recording as soon as it registers a sound.