somniloquy (n.) Look up somniloquy at Dictionary.com
talking in one's sleep, 1847, from somni-, comb. form of somnus "sleep" (see somnolence) + loqui "to speak" (see locution). Related: Somniloquence; somniloquent (1804); somniloquist; somniloquous; somniloquize.