Synonyms|73Antonyms|1|Broader|0Narrower|0Related|3
2
daft(silly, foolish, stupid)
2
idiotic(silly, foolish, stupid)
2
moronic(silly, foolish, stupid)
2
not all there(expression, idiom)
2
odd
2
psycho
2
senseless(silly, foolish, stupid)
2
simple(silly, foolish, stupid)
2
simpleminded(silly, foolish, stupid)
2
witless(silly, foolish, stupid)
1
abnormal
1
arrested
1
babbling
1
backward
1
blithering
1
cracked
1
crazy
1
defective
1
demented
1
deranged
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APASmart Define. (2015). mentally deficient thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/mentally_deficient/thesaurus/synonyms
ChicagoSmart Define. 2015. "mentally deficient thesaurus" https://smartdefine.org/mentally_deficient/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, mentally deficient thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/mentally_deficient/thesaurus/synonyms>.
MLASmart Define. "mentally deficient thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/mentally_deficient/thesaurus/synonyms>