talking in one's sleep
• (n.) The act of talking in one`s sleep; somniloquism.
Somniloquism ... 1. Talking or muttering in one's sleep. ... Synonym: sleeptalking. ... Synonym: somniloquy. ... Origin: L. Somnus, sleep, + loquor, to talk ... (05 Mar 2000) ... 
Som·nil'o·quence noun The act of talking in one's sleep; somniloquism. 
Type: Term Pronunciation: som-nil′ŏ-kwens, -kwizm Definitions: 1. Talking or muttering in one's sleep. Synonyms: somniloquy, sleeptalking1
somniloquence, somniloquent Talking or muttering while asleep. Related 'sleep' units: dorm-; hypno-; letho-; narco-; oneiro- (dream); sopor-.