Synonyms|981Antonyms|364|Broader|17Narrower|8Related|1.8k

514 entries under adjective topic. ×

7
vacant(dull, wrong, careless, indifferent)
6
apathetic(dull, sharp, rude, careless)
6
blunt(careless, inconsiderate, crass, tactless)
6
distrait(careless, cold, forget, uncaring)
6
empty-headed(careless, indifferent, silly, stupid)
6
feckless(feature, state, careless, wild)
6
happy-go-lucky(feature, state, trait, casual)
6
ill-judged(careless, foolish, bold, impulsive)
6
incurious(careless, cold, forget, uncaring)
6
insane(silly, unwise)
6
insouciant(feature, state, dull, trait)
6
listless(energy, sharp, rude, careless)
6
mean(person, negative, ill, hostile)
6
merciless(person, negative)
6
short-sighted(silly, foolish, rash, unwise)
6
undiscerning(careless, indifferent, foolish, stupid)
6
unguarded(careless, casual, bold, impulsive)
6
unreasoning(dull, careless, indifferent, foolish)
6
unwatchful(careless, cold, forget, bold)
5
absent(dull, careless, indifferent, stupid)
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ChicagoSmart Define. 2016. "thoughtless thesaurus" https://smartdefine.org/thoughtless/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, thoughtless thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/thoughtless/thesaurus/synonyms>.
MLASmart Define. "thoughtless thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/thoughtless/thesaurus/synonyms>