adjective
inconsiderate
Synonyms: antisocial, apathetic, asocial, blind, boorish, brash, deaf, discourteous, egocentric, hasty, heedless, hot-headed, impolite, inattentive, incautious, 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
Antonyms: considerate, kind, thinking, thoughtful, unselfish
adjective
absent-minded, unobservant
Synonyms: bovine, careless, confused, doltish, dull, empty-headed, flighty, foolish, heedless, ill-advised, ill-considered, imprudent, inadvertent, inane, inattentive, incomprehensible, inept, injudicious, irrational, irreflective, lamebrained, loony, mindless, neglectful, negligent, obtuse, puerile, rash, reckless, regardless, remiss, senseless, silly, stupid, undiscerning, unheeding, unmindful, unreasonable, unreasoning, unreflective, unthinking, vacuous, witless
Antonyms: attentive, heeding, mindful, observant, thoughtful