Synonyms|1.4kAntonyms|464|Broader|16Narrower|51Related|1.9k
2
extravagant(calm, good, plain, thrifty)
2
goofy
2
hurried
2
impetuous
2
imprecise
2
inconsiderate(adjective, false, loose, reckless)
2
indiscreet(adjective, false, loose, reckless)
2
irresponsible(adjective, careless, reckless, responsible)
2
loquacious
2
offhanded
2
rash(adjective, reasonable, sensible, false, careless)
2
slack
2
slapdash
2
sloppy
2
superficial(adjective, sensible, detail, deep, depth)
2
tactless(adjective, careless, unthinking, tactful)
2
uncritical
2
unmindful
2
untroubled
1
amorphous
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ChicagoSmart Define. 2016. "careful thesaurus" https://smartdefine.org/careful/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2016, careful thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/careful/thesaurus/antonyms>.
MLASmart Define. "careful thesaurus" 24 January 2016. Web. 28 September 2026. <https://smartdefine.org/careful/thesaurus/antonyms>