4
unreasonable
4
unwise
3
active(energetic, fast, animated, rapid, swift)
3
antsy(adjective, keen, violent, anxious, eager)
3
brave
3
burning(adjective, strong, desire, difficult, intense)
3
chafing(adjective, keen, violent, anxious, eager)
3
choleric(adjective, keen, intense, violent, hot)
3
cursory(fast, quick, rapid, speedy, swift)
3
desperado(adjective, rash)
3
excitable(adjective, upset, feeling, moving, intense)
3
fervent(adjective, strong, moving, desire, difficult)
3
fleeting(adjective, quick, speedy, sudden, hurried)
3
fretful(adjective, keen, violent, anxious, eager)
3
harum-scarum(adjective, violent, fast, careful, quick)
3
hysterical(adjective, upset, feeling, moving, rough)
3
ill-judged(adjective, careless, bold, thoughtless, wary)
3
inconsiderate(rude, careless, quick, thoughtless, impulsive)
3
instinctive(noun, adjective, simple, passionate, violent)
3
involuntary(noun, adjective, simple, passionate, violent)
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APASmart Define. (2016). impetuous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/impetuous/thesaurus/synonyms
ChicagoSmart Define. 2016. "impetuous thesaurus" https://smartdefine.org/impetuous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, impetuous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/impetuous/thesaurus/synonyms>.
MLASmart Define. "impetuous thesaurus" 24 January 2016. Web. 23 September 2026. <https://smartdefine.org/impetuous/thesaurus/synonyms>