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English Lexicon

Somniloquy

/sɒmˈnɪl.ə.kwi/
nounCEFR C2 (Proficient)Top #14500 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    The act of talking or uttering words in one's sleep.

    "His somniloquy often involved complex debates with unseen colleagues during the night."
  2. 2

    Vocalizations or utterances produced unconsciously while sleeping.

    "The sleep study recorded several instances of somniloquy ranging from unintelligible murmurs to clear sentences."
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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived from the Latin roots 'somnus' meaning 'sleep' and 'loqui' meaning 'to speak', combined with the English suffix '-y'. Coined in the 19th century within medical and psychological terminology to formally describe the phenomenon of talking during sleep.

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