183 entries under adjective topic. ×

1
brutish(silly, foolish, senseless, unnecessary)
1
careless(silly, foolish, senseless, rash)
1
daydreaming(indifferent, silly, foolish, idle)
1
defective
1
double talk(expression, silly, stupid, insignificant)
1
dozy
1
feather-headed
1
flaky(silly, stupid, insignificant, unreasonable)
1
flighty(simple, slight, foolish, stupid)
1
frivolous(simple, slight, silly, foolish)
1
futile(dull, simple, slow, silly)
1
gullible(dull, simple, slow, silly)
1
half-baked(dull, weak, simple, slight)
1
half-wit
1
halfwitted
1
heedless(careless, silly, foolish, senseless)
1
inconsistent(simple, silly, foolish, stupid)
1
indiscreet(dull, weak, simple, silly)
1
lightheaded(mind, think)
1
maniacal(mind, think)
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APASmart Define. (2016). unintelligent thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unintelligent/thesaurus/synonyms
ChicagoSmart Define. 2016. "unintelligent thesaurus" https://smartdefine.org/unintelligent/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, unintelligent thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unintelligent/thesaurus/synonyms>.
MLASmart Define. "unintelligent thesaurus" 24 March 2016. Web. 29 September 2026. <https://smartdefine.org/unintelligent/thesaurus/synonyms>