somnambulistic
Som*nam`bu*lis"tic, a. Defn: Of or pertaining to a somnambulist or somnambulism; affected by somnambulism; appropriate to the state of a somnambulist. Whether this was an intentional and waking departure, or a somnambulistic leave-taking and waking in her sleep, may remain a subject of contention. Dickens.