Synonyms|1.1kAntonyms|346|Broader|15Narrower|3Related|1.9k
2
aimless
2
casual
2
chance
2
discourteous(adjective, happy, careless, superficial, flippant)
2
featherbrained
2
flighty
2
flippant(adjective, happy, careless, superficial)
2
harebrained
2
ill-bred
2
ill-mannered
2
incautious(adjective, happy, careless, careful, superficial)
2
instinctive
2
light-headed
2
neglectful
2
obtuse(adjective, happy, careless, superficial, flippant)
2
reckless(adjective, reserved, cautious)
2
scatterbrained
2
selfish
2
spiteful(good, kind)
2
spontaneous
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APASmart Define. (2016). thoughtful thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/thoughtful/thesaurus/antonyms
ChicagoSmart Define. 2016. "thoughtful thesaurus" https://smartdefine.org/thoughtful/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, thoughtful thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/thoughtful/thesaurus/antonyms>.
MLASmart Define. "thoughtful thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/thoughtful/thesaurus/antonyms>