- Never wake a sleepwalker; They could get violent. And whatever you do, dont give him an ax. Sleepwalking, also known as somnambulism or noctambulism, is a phenomenon of combined sleep and wakefulness. Итак лунатик - это sleepwalker, somnambulist или noctambulist. Первый вариант, конечно, встречается чаще. 787 viewsedited 03:00