absorbed (adj.)

• absent
• absentminded
• abstracted
• bemused
• buried
• contemplative
• deep
• devoted
• dreamy
• drowsing
• ecstatic
• engaged
• engrossed
• faraway
• intent
• introspective
• involved
• lost
• meditative
• monomaniacal
• musing
• napping
• nodding
• oblivious
• obsessed
• occupied
• pensive
• preoccupied
• rapt
• single-minded
• studious
• unconscious
• woolgathering
• wrapped