inconsiderate (adj.)
- airy
- arbitrary
- boorish
- brash
- caddish
- capricious
- careless
- casual
- coarse
- crude
- cursory
- degage
- easygoing
- flippant
- forgetful
- hasty
- heedless
- hotheaded
- ill-advised
- ill-bred
- ill-considered
- ill-judged
- impolitic
- imprudent
- inadvertent
- inadvisable
- incautious
- indifferent
- indiscreet
- inexpedient
- injudicious
- insensate
- insensitive
- insouciant
- intolerant
- irrational
- lazy
- loutish
- madcap
- mindless
- misguided
- myopic
- nasty
- oblivious
- offensive
- offhand
- perfunctory
- rash
- reasonless
- reckless
- regardless
- rude
- senseless
- sharp
- shortsighted
- tactless
- thoughtless
- unaccommodating
- unadvised
- uncaring
- unceremonious
- unconcerned
- unconsidered
- uncooperative
- undiplomatic
- undiscerning
- unfeminine
- ungentle
- ungentlemanly
- ungracious
- unguarded
- unheeding
- unhelpful
- unladylike
- unmindful
- unobliging
- unprepared
- unready
- unreasonable
- unreasoning
- unrefined
- unreflective
- unseeing
- unsound
- unsympathetic
- untactful
- unthinking
- unthoughtful
- unwise
- vulgar
- witless
