Lethean, absent, absentminded, absorbed, abstracted, airheaded, airy, amnesiac, amnesic, apt to forget, bemused, blocked, careless, casual, converted, cursory, daydreaming, daydreamy, degage, disorganized, disregardant, disregardful, distracted, dreaming, dreamy, easygoing, flippant, forgetting, free and easy, having a memory like a sieve, having a mind like a sieve, heedless, in the clouds, inadvertent, inattentive, inclined to forget, inconsiderate, indifferent, insouciant, lax, lazy, mindless, mooning, moony, neglectful, negligent, oblivious, offhand, out of it, perfunctory, pipe-dreaming, preoccupied, rapt, reckless, regardless, remiss, remote, repressed, respectless, scatterbrained, slack, suppressed, tactless, thoughtless, unaccommodating, unaware, uncomplaisant, unconscious, uncooperative, undiplomatic, unheedful, unheeding, unhelpful, unmindful, unobliging, unprepared, unready, unsolicitous, untactful, unthinking, unthoughtful, unwitting, vague, woolgathering, wrapped up