unthoughtful

antisocial apathetic asocial blind boorish brash deaf discourteous disregardful egocentric hasty heedless hot-headed impolite inattentive incautious inconsiderate indelicate indifferent indiscreet insensitive listless madcap neglectful negligent primitive rash reckless rude self-centered selfish sharp short tactless uncaring unceremonious unconcerned undiplomatic ungracious unheeding unkind unmindful unrefined unthinking