8
fatuous(adjective, stupid)
2
bovine(careless, stupid, unthinking, obtuse, unperceptive)
2
doltish(careless, stupid, unthinking, obtuse, unperceptive)
2
stupid(dull, simple, careless, silly, limited)
2
thick(extraordinary, amazing, dubious, astonishing, incredible)
1
asinine
1
astonishing(extraordinary, amazing, dubious, incredible)
1
beef-brained
1
beef-witted
1
beyond belief(expression, extraordinary, amazing, incredible)
1
birdbrained(adjective, dull, simple, silly, stupid)
1
blockish
1
chumpish
1
cloddish
1
cockamamie(extraordinary, amazing, dubious, astonishing, incredible)
1
cockeyed(extraordinary, amazing, dubious, astonishing, incredible)
1
confused(careless, stupid, unthinking, obtuse, unperceptive)
1
cowish
1
crass
1
dense
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APASmart Define. (2015). lamebrained thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/lamebrained/thesaurus/synonyms
ChicagoSmart Define. 2015. "lamebrained thesaurus" https://smartdefine.org/lamebrained/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, lamebrained thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/lamebrained/thesaurus/synonyms>.
MLASmart Define. "lamebrained thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/lamebrained/thesaurus/synonyms>