3
empty(adjective, ineffective, fruitless)
3
illiterate(adjective, silly, stupid, green, fat)
3
ludicrous(adjective, dull, weak, simple, silly)
3
mad(adjective, weak, simple, silly, foolish)
3
meaningless(adjective, dull, simple, slight, silly)
3
simple-minded(adjective, dull, simple, slow, silly)
3
stupefied(dull, witless)
3
thick-headed(adjective, dull, silly, foolish, stupid)
3
thickheaded
3
uneducated(adjective, silly, stupid, green, fat)
3
unskillful(adjective, mind, think)
2
retarded
2
absurd(adjective, weak, simple, silly, foolish)
2
birdbrained(silly, foolish, stupid, crazy, insane)
2
boneheaded
2
chuckleheaded
2
cloddish
2
crazy(adjective, weak, simple, silly, foolish)
2
cretinous(adjective, unintellectual)
2
daffy(adjective, weak, simple, slow, silly)
10 years ago|15k views|share |citing 
APASmart Define. (2016). unintelligent thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unintelligent/thesaurus/synonyms
ChicagoSmart Define. 2016. "unintelligent thesaurus" https://smartdefine.org/unintelligent/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, unintelligent thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unintelligent/thesaurus/synonyms>.
MLASmart Define. "unintelligent thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/unintelligent/thesaurus/synonyms>