180 entries under careless topic. ×

4
fiery(adjective, quick, restless, impulsive)
4
groundless
4
happy-go-lucky(adjective, feature, state, trait)
4
harebrained(adjective, wild, silly, foolish)
4
hopeless(adjective, weak, wild, anxious)
4
ill-judged(adjective, foolish, bold, thoughtless)
4
immoderate(adjective, free, wild, extravagant)
4
passionate(adjective, thoughtless, restless, impulsive)
4
sudden(noun, casual, quick, thoughtless)
4
unreasonable(adjective, silly, stupid, thoughtless)
4
wasteful(adjective, free, indifferent, wild)
3
furious(anxious, worried, thoughtless, impulsive)
3
inexpedient(adjective, foolish, thoughtless, rash)
3
lavish(adjective, free, wild, extravagant)
3
lax(adjective, feature, state, indifferent)
3
preposterous(adjective, wild, silly, foolish)
3
spendthrift(adjective, free, wild, extravagant)
3
spontaneous(noun, adjective, casual, thoughtless)
3
stupid(silly, foolish, crazy, thoughtless)
3
unadvised(adjective, smart)
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APASmart Define. (2015). reckless thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/reckless/thesaurus/synonyms
ChicagoSmart Define. 2015. "reckless thesaurus" https://smartdefine.org/reckless/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, reckless thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/reckless/thesaurus/synonyms>.
MLASmart Define. "reckless thesaurus" 3 August 2015. Web. 24 September 2026. <https://smartdefine.org/reckless/thesaurus/synonyms>