- impetuous
- adj1. hasty, quick, abrupt, swift; precipitate, headlong, careless, slapdash; eager, energetic, dashing, buckish, spirited, lively.2. impulsive, spontaneous, unreflective, thoughtless, unreasoned, unreflecting, offhand, spur-of-the-moment, ill-conceived; mercurial, fickle, capricious; overhasty, rash, reckless, madcap, temerarious; brash, heedless, incautious, heady, foolhardy; excitable, impatient, hot-blooded, Inf. quick on the trigger, Inf. trigger-happy; hotheaded, fiery, ardent, passionate, overzeal-ous; burning, fervid, perfervid.3. violent, forceful, powerful, vigorous, raging; rampant, unrestrained, uncontrolled, unbridled, wild, ungoverned; unrestrainable, ungovernable, uncontrollable, unruly; intractable, headstrong, willful, stubborn, obstinate.
A Note on the Style of the synonym finder. 2014.