Synonyms and related words :
arbitrary, capricious, careless, disregardful, forgetful, heedless, ill-advised, ill-considered, ill-contrived, ill-devised, ill-gauged, ill-judged, impolitic, imprudent, inadvertent, inadvisable, inconsiderate, indiscreet, inexpedient, injudicious, insensate, irrational, mindless, misadvised, misguided, myopic, reasonless, reckless, respectless, senseless, shortsighted, thoughtless, unaccommodating, unadvised, uncalculating, uncomplaisant, unconsidered, uncooperative, undiscerning, unforeseeing, unguarded, unheedful, unhelpful, unmindful, unobliging, unreasonable, unreasoning, unreflecting, unreflective, unseeing, unsensible, unsound, unthinking, unwise, witless