Synonyms and related words :
a stranger to, absent, absentminded, absorbed, abstracted, anesthetized, asleep, bemused, blind to, castle-building, cataleptic, caught napping, comatose, daydreaming, daydreamy, dead to, deaf to, doped, dozy, dreaming, dreamy, drowsing, drowsy, drugged, drugged with sleep, ecstatic, elsewhere, engrossed, faraway, goofing off, half asleep, half-awake, heavy, heavy with sleep, heavy-eyed, impercipient, in a reverie, in a stupor, in ignorance of, in the clouds, incautious, incognizant, insensible, insensible to, languid, lethargic, lost, lost in thought, meditative, mindless, mooning, moonraking, museful, musing, narcoleptic, narcose, narcotized, narcous, nodding, nonconceiving, not with it, oblivious, off-guard, oscitant, out of it, pensive, pipe-dreaming, preoccupied, rapt, sedated, sleep-drowned, sleep-drunk, sleep-filled, sleep-swollen, sleepful, sleeping, sleepy, slumberous, slumbery, snoozy, somewhere else, somnolent, soporific, stargazing, stretchy, stuporose, stuporous, taken up, transported, unalert, unaware, unaware of, uncautious, unconscious, unconscious of, unguarded, unhearing, uninsightful, unknowing, unmindful, unmindful of, unperceiving, unprehensive, unprepared, unready, unrealizing, unseeing, unsuspecting, unvigilant, unwary, unwatchful, unwitting, witless, woolgathering, wrapped in thought, yawning, yawny