Synonyms and related words :
absent, absentminded, absorbed, absorbed in, abstracted, bemused, brooding, buried in, castle-building, caught up in, cogitative, cognitive, concentrating, concentrative, conceptive, conceptual, conceptualized, contemplating, contemplative, daydreaming, daydreamy, deliberating, deliberative, devoted, devoted to, do-nothing, dormant, dreaming, dreamy, drowsing, ecstatic, elsewhere, engaged, engrossed, engrossed in, excogitating, excogitative, faraway, half-awake, ideative, idle, immersed in, immobile, in a reverie, in the clouds, inactive, inert, intent, intent on, introspective, involved, laissez-aller, laissez-faire, lost, lost in, lost in thought, meditating, mental, monomaniacal, monopolized, mooning, moonraking, motionless, museful, musing, napping, neuter, neutral, nodding, noetic, oblivious, obsessed, occupied, paralytic, paralyzed, passive, pensive, pipe-dreaming, pondering, prehensive, preoccupied, procrastinating, quiescent, quietist, quietistic, rapt, reflecting, reflective, ruminant, ruminating, ruminative, serious, single-minded, sober, somewhere else, speculative, stagnant, stagnating, standpat, stargazing, static, stationary, studious, studying, submerged in, swept up, taken up, taken up with, thinking, thought, thoughtful, totally absorbed, transported, unconscious, vegetable, vegetative, wistful, woolgathering, wrapped in, wrapped in thought, wrapped up in