5
freakish(adjective, unusual, careless, unstable, unreasonable)
5
ingenuous(adjective, open, smooth, simple, easy)
5
irresolute(adjective, unstable, irregular, unsettled, unpredictable)
5
mutable(adjective, careless, unstable, unreasonable, unsettled)
5
precipitant(adjective, careless, careful, quick, thoughtless)
5
reflexive(adjective, unwilling, obligatory, compulsory)
5
spur-of-the-moment(noun, adjective, violent, natural, fierce)
5
tearaway
5
uncertain(adjective, unusual, unstable, chance, original)
5
unconstrained(adjective, simple, natural, casual, willing)
5
uncontrolled(adjective, simple, nervous, natural, casual)
5
unintentional(adjective, simple, natural, chance, casual)
5
unreliable(adjective, unstable, irregular, unsettled, unpredictable)
5
unstable(adjective, careless, lively, active, unreasonable)
5
unwilling(adjective, irresolute, obligatory, compulsory)
4
adrift(adjective, motiveless)
4
blind(necessity, unwilling, obligatory, compulsory)
4
bold(adjective, smart, careless, thoughtless, wary)
4
brainish
4
brave(adjective, smart, bold, reckless, courageous)
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APASmart Define. (2015). impulsive thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/impulsive/thesaurus/synonyms
ChicagoSmart Define. 2015. "impulsive thesaurus" https://smartdefine.org/impulsive/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, impulsive thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/impulsive/thesaurus/synonyms>.
MLASmart Define. "impulsive thesaurus" 3 August 2015. Web. 22 September 2026. <https://smartdefine.org/impulsive/thesaurus/synonyms>