5
tempestuous(adjective, strong, severe, intense, violent)
5
unwary(adjective, careless, thoughtless, impulsive, rash)
4
animated(adjective, strong, keen, difficult, intense)
4
blind(adjective, uncontrolled)
4
brainish
4
breathless(adjective, desire, keen, violent, anxious)
4
brusque(adjective, keen, rough, violent, violence)
4
energetic(adjective, active, fast, animated, rapid)
4
eye-opening(adjective, amazing, astonishing, astounding, dumbfounding)
4
hectic(adjective, rash)
4
keen(adjective, desire, energetic, violent, enthusiastic)
4
lively(adjective, keen, intense, energetic, passionate)
4
mindless
4
out of the blue(adjective, sudden)
4
restive(adjective, impulsive, thinking, rash, unthinking)
4
rushing(adjective, violent, fast, quick, thinking)
4
spirited(adjective, strong, keen, difficult, intense)
4
strong(adjective, severe, difficult, intense, passionate)
4
temerarious(adjective, careless, wild, careful, bold)
4
unpredictable(noun, passionate, violent, unstable, thoughtless)
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APASmart Define. (2016). impetuous thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/impetuous/thesaurus/synonyms
ChicagoSmart Define. 2016. "impetuous thesaurus" https://smartdefine.org/impetuous/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, impetuous thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/impetuous/thesaurus/synonyms>.
MLASmart Define. "impetuous thesaurus" 24 January 2016. Web. 22 September 2026. <https://smartdefine.org/impetuous/thesaurus/synonyms>