24 entries under expression topic. ×

7
non compos mentis(adjective, idiom, law, unstable)
6
of unsound mind(adjective, idiom, off, lunatic)
5
out to lunch(adjective, idiom, crazy, unstable)
2
mentally ill(adjective, crazy, sick, sane)
2
not right(crazy, cuckoo, queer)
1
bereft of reason
1
caught napping(adjective, unconcerned, ignorant, unconscious)
1
crazy as a loon(idiom, crazy, sick, off)
1
deaf to(adjective, unconcerned, ignorant, unconscious)
1
deprived of reason
1
in a daze(adjective, idiom, unconcerned, confused)
1
mad as a hatter(crazy, sick, hacked, lunatic)
1
not cognizant(adjective, unconcerned, ignorant, unconscious)
1
not there(hacked, lunatic, undiscerning, crackbrained)
1
nutty as a fruitcake(idiom, crazy, sick, off)
1
out cold(adjective, unconcerned, ignorant, unconscious)
1
out of it(adjective, idiom, unconcerned, ignorant)
1
sick in the head(idiom, crazy, sick, lunatic)
1
stark raving mad(adjective, idiom, crazy, sick)
1
strung out(unconcerned, unfamiliar, uninformed, undiscerning)
<12>
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APASmart Define. (2015). not all there thesaurus. Retrieved September 23, 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 23, 2026).
HarvardSmart Define 2015, not all there thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/not_all_there/thesaurus/synonyms>.
MLASmart Define. "not all there thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/not_all_there/thesaurus/synonyms>