1
basket case(noun, slang, sick, mad person)
1
bats
1
bereft of reason(expression, idiom)
1
blind(adjective, unconcerned, ignorant, unconscious, heedless)
1
blithering
1
blundering(unconcerned, unfamiliar, uninformed)
1
buggy(adjective, sane, off, dotty)
1
bughouse
1
bugs
1
burbling
1
careless(ignorant, unconscious, uninformed)
1
caught napping(expression, adjective, unconcerned, ignorant, unconscious)
1
coo-coo(noun, slang, sick, mad person)
1
crack-brain(noun, slang, sick, mad person)
1
crack-brained
1
crack-skull(noun, slang, sick, mad person)
1
crackbrained
1
crazy as a loon(expression, idiom, crazy, sick, off)
1
cretinistic
1
cretinous
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APASmart Define. (2015). not all there thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/not_all_there/thesaurus/synonyms
ChicagoSmart Define. 2015. "not all there thesaurus" https://smartdefine.org/not_all_there/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, not all there thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/not_all_there/thesaurus/synonyms>.
MLASmart Define. "not all there thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/not_all_there/thesaurus/synonyms>