4
immoderate(adjective, careless, extravagant, generous, lavish)
4
inefficient(adjective, well, extravagant, incompetent, lavish)
4
madcap(adjective, careless, careful, bold, thoughtless)
4
short-sighted(adjective, foolish, rash, risky, unthinking)
4
slapdash(adjective, careless, careful, casual, rash)
3
foolish(adjective, careless, stupid, thoughtless, impulsive)
3
impolitic(adjective, careless, foolish, stupid, thoughtless)
3
mindless(adjective, casual, happy-go-lucky, slapdash)
3
squandering
3
unconsidered(adjective, foolish, careful, rash, irresponsible)
3
unguarded(adjective, careless, casual, bold, thoughtless)
2
bold(adjective, careless, thoughtless, rash, wary)
2
crazy(adjective, excessive, expensive, steep, high-priced)
2
hotheaded(adjective, careless, wild, careful, bold)
2
inadvisable(adjective, foolish, rash, risky)
2
inattentive(neglect, rashness)
2
indifferent(neglect, casual, happy-go-lucky, slapdash)
2
inexpedient(adjective, careless, foolish, thoughtless, rash)
2
intemperate(adjective, grand, extravagant, generous, abundant)
2
irresponsible(adjective, careless, foolish, casual, thoughtless)
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APASmart Define. (2015). improvident thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/improvident/thesaurus/synonyms
ChicagoSmart Define. 2015. "improvident thesaurus" https://smartdefine.org/improvident/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, improvident thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/improvident/thesaurus/synonyms>.
MLASmart Define. "improvident thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/improvident/thesaurus/synonyms>