lost in thought (?.)

• absent
• absentminded
• absorbed
• abstracted
• bemused
• buried in thought
• castle-building
• daydreaming
• daydreamy
• dreaming
• dreamy
• drowsing
• ecstatic
• elsewhere
• engaged in thought
• engrossed
• engrossed in thought
• faraway
• half-awake
• immersed in thought
• in a reverie
• in the clouds
• introspective
• lost
• meditative
• mooning
• moonraking
• museful
• musing
• napping
• nodding
• oblivious
• occupied
• pensive
• pipe-dreaming
• preoccupied
• rapt
• somewhere else
• stargazing
• taken up
• transported
• unconscious
• woolgathering
• wrapped in thought