514 entries under adjective topic. ×

5
uncharitable(mean, nasty, ill, hostile)
5
uncivil(sharp, rough, rude, careless)
5
unfeeling(mean, sharp, rough, harsh)
5
unobliging(cold, forget, uncaring, inattentive)
5
unserious
5
unsolicitous(cold, forget, uncaring, inattentive)
5
untactful(sharp, rough, rude, careless)
4
absentminded(careless, indifferent, apathetic, distracted)
4
airy(feature, state, trait, casual)
4
asinine(silly, foolish, stupid, vulgar)
4
bold(careless, impulsive, rash, aggressive)
4
breakneck(wild, quick, rash, reckless)
4
callous
4
carefree(feature, state, condition, careless)
4
clumsy(sharp, rough, careless, insensitive)
4
confused(careless, foolish, stupid, unwise)
4
cool(feature, state, trait)
4
daring(careless, wild, impulsive, rash)
4
deaf(unkind, uncaring, inconsiderate)
4
dizzy
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APASmart Define. (2016). thoughtless thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/thoughtless/thesaurus/synonyms
ChicagoSmart Define. 2016. "thoughtless thesaurus" https://smartdefine.org/thoughtless/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, thoughtless thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/thoughtless/thesaurus/synonyms>.
MLASmart Define. "thoughtless thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/thoughtless/thesaurus/synonyms>