Synonyms:

heedless, inconsiderate, careless Collocations, unthinking, automatic, blank Collocations, blind Collocations, brainless, compulsive, crazy Collocations, discourteous, disregardful, easygoing Collocations, empty Collocations, empty-headed, fatuous, feckless, flippant, foolish Collocations, forgetful Collocations, free and easy, hasty Collocations, headless, idiotic, ignorant, ill-devised, illogical, imbecilic, impolite Collocations, imprudent, impulsive, inadvertent, inane, indifferent, inept, inexpedient, injudicious, insane Collocations, insouciant, instinctive, involuntary, irrational, lazy Collocations, mad Collocations, mechanical Collocations, mindless, misguided, moronic, myopic, neglectful, nonsensical, not bright, oblivious Collocations, offhand, passive, pea-brained, perfunctory, pin-brained, rash Collocations, reasonless, reckless Collocations, reflex, reflexive, relaxed Collocations, rude Collocations, senseless, short-sighted, shortsighted, silly Collocations, slack-minded, slack-witted, stupid Collocations, tactless, thoughtless Collocations, tranquil, unaccommodating, unadvised, uncaring, uncivil, uncomplacent, unconscious Collocations, unconsidered, uncooperative, undiplomatic, undiscerning, undiscriminating, unguarded, unguided, unhelpful, unintellectual, unintelligent, unintended, unintentional, unmeant, unmindful, unobliging, unoccupied, unperceptive, unplanned, unpremeditated, unprepared, unprompted, unready, unreasoning, unseeing, insensible, untactful, unwilling Collocations, unwise, unwitting, vacant Collocations, witless, wrecking

Synonyms:

impulsive, unwise, rash Collocations, unreasonable