Cautious

Antonyms of CAUTIOUS

careless, thoughtless, inconsiderate, indiscreet, unwise, negligent, unintentional, unplanned, foolish, hasty, lax, certain, brave, unobservant, inattentive, oblivious, incautious, dull, imprudent, heedless, injudicious, regardless, unmindful, asleep, inadvertent, uncareful, unguarded, drowsy, immoderate, sure, reckless, rash.