somniloquy

/ sɒmˈnɪləkwɪ /

noun

1. rare.
   the act of talking in one's sleep

Derived Forms

• somˈniloquous, adjective
• somˈniloquist, noun

Word History and Origins

Origin of somniloquy¹

C19: from Latin somnus sleep + loqui to speak; compare soliloquy