audacious bold daring foolhardy hasty ill-advised ill-considered immature impetuous imprudent indiscreet irrational reckless thoughtless madcap precipitant precipitate wild adventurous brash determined devil-may-care fiery frenzied furious harebrained headlong headstrong heedless hotheaded incautious injudicious insuppressible jumping to conclusions overhasty passionate premature unguarded unthinking unwary venturesome venturous