airy, arbitrary, automatic, blank, blankminded, blind, brainless, calm, capricious, careless, casual, compulsive, conditioned, crazy, cursory, degage, discourteous, disregardant, disregardful, easygoing, empty-headed, empty, fatuous, feckless, flippant, foolish, forced, forgetful, free and easy, hasty, headless, heedless, idiotic, ignorant, ill-advised, ill-considered, ill-contrived, ill-devised, ill-gauged, ill-judged, illogical, imbecilic, impolite, impolitic, imprudent, impulsive, inadvertent, inadvisable, inane, incogitant, inconsiderate, indifferent, indiscreet, inept, inexpedient, injudicious, insane, insensate, insouciant, instinctive, involuntary, irrational, lackbrained, lazy, lean-minded, lean-witted, mad, mechanical, mindless, misadvised, misguided, moronic, myopic, neglectful, nirvanic, nonsensical, not bright, oblivious, of little brain, offhand, passive, pea-brained, perfunctory, pin-brained, quietistic, rash, reasonless, reckless, reflex, reflexive, regardless, relaxed, respectless, rude, senseless, shortsighted, silly, slackminded, slackwitted, stupid, tactless, thoughtfree, thoughtless, tranquil, unaccommodating, unadvised, uncalculating, uncaring, uncivil, uncomplaisant, unconscious, unconsidered, uncooperative, undesigned, undiplomatic, undiscerning, undiscriminating, unforeseeing, ungifted, unguarded, unguided, unheedful, unheeding, unhelpful, unideaed, unintellectual, unintelligent, unintended, unintentional, unmeant, unmeditated, unmindful, unobliging, unoccupied, unperceiving, unperceptive, unplanned, unpremeditated, unprepared, unprompted, unpurposed, unready, unreasonable, unreasoning, unreflecting, unreflective, unseeing, unsensible, unsolicitous, unsound, untactful, untalented, unthought-of, unthoughtful, unwilled, unwilling, unwise, unwitting, vacant, vacuous, witless, wrecking