somniloquy (n.) Look up somniloquy at Dictionary.com
talking in one's sleep, 1847, from somni- "sleep" + -loquy, from Latin loqui "to speak" (from PIE root *tolkw- "to speak"). Related: Somniloquence (1814); somniloquent (1804, Coleridge); somniloquist; somniloquous; somniloquize.