(a.) Meditative; thoughtfully silent.

absconded absentminded absorbed abstracted away bemused castle-building daydreaming daydreamy deficient deleted departed disappeared distrait dreaming dreamy drowsing ecstatic elsewhere engrossed faraway forgetful gone half-awake heedless in a reverie in the clouds keep away from lacking lost lost in thought meditative missing mooning moonraking museful musing napping no longer present nodding nonattendant nonexistent not found not present oblivious off omitted out out of sight pensive pipe-dreaming preoccupied rapt somewhere else stargazing subtracted taken away taken up transported unconscious vanished wanting withdraw from woolgathering wrapped in thought