2
pea-brained
2
petty(adjective, smallness)
2
pinheaded
2
simpleminded(adjective, dull, simple, silly, foolish)
2
soft(adjective, silly, stupid, green, fat)
2
softheaded
2
stunned
2
uncomprehending(adjective, dull, indifferent, stupid, blank)
2
wacky(adjective, weak, simple, silly, foolish)
1
Boeotian
1
active
1
addle-pated
1
addled(adjective, simple, slow, stupid, boring)
1
airheaded
1
artless
1
awkward
1
batty(adjective, silly, foolish, stupid, crazy)
1
benighted
1
bird-brained
1
blank
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>