Synonyms|186Antonyms|155|Broader|31Narrower|220Related|1k
1
dunderheaded(adjective, mind, behavior, idiotism)
1
fallacious(adjective, mind, foolishness, disability)
1
featherheaded(adjective, mind, behavior, idiotism)
1
feebleminded(adjective, mind, behavior, idiotism)
1
fool(adjective, mind, behavior, idiotism)
1
futile(adjective, characteristic, stupidity, foolishness)
1
groundless(adjective, mind, foolishness, disability)
1
gullible(adjective, characteristic, stupidity, foolishness)
1
idiotical(adjective, mind, behavior, idiotism)
1
ill-advised(adjective, characteristic, stupidity, foolishness)
1
illiterate(adjective, mind, behavior, idiotism)
1
illogical(adjective, mind, foolishness, disability)
1
improvident(adjective, feature, speech, conduct, dullness)
1
incautious(adjective, feature, speech, conduct, dullness)
1
insane(adjective, mind, behavior, idiotism)
1
insensate(adjective, characteristic, stupidity, foolishness)
1
invalid(adjective, mind, foolishness, disability)
1
irrelevant(adjective, characteristic, stupidity, foolishness)
1
irresponsible(adjective, characteristic, stupidity, foolishness)
1
knuckleheaded(adjective, mind, behavior, idiotism)
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APASmart Define. (2016). intelligent thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/intelligent/thesaurus/antonyms
ChicagoSmart Define. 2016. "intelligent thesaurus" https://smartdefine.org/intelligent/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2016, intelligent thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/intelligent/thesaurus/antonyms>.
MLASmart Define. "intelligent thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/intelligent/thesaurus/antonyms>