Synonyms:
- airy,
- arbitrary,
- automatic,
- blank,
- blankminded,
- blind,
- brainless,
- calm,
- capricious,
- careless,
- casual,
- compulsive,
- conditioned,
- crazy,
- cursory,
- degage,
- discourteous,
- disregardant,
- disregardful,
- easygoing,
- empty,
- empty-headed,
- 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,
- short-sighted,
- 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