45 entries under sane topic. ×

10
daffy(adjective, simple, informal, silly, foolish)
10
screwy(adjective, slang, wild, silly, foolish)
9
maniac(adjective, violent, crazy, fierce, insane)
9
moonstruck(adjective, silly, foolish, stupid, mad)
9
unsound(adjective, simple, foolish, crazy, unstable)
8
cuckoo(adjective, slang, wild, silly, foolish)
8
not all there(expression, adjective, idiom, unstable, disturbed)
7
bananas(adjective, slang)
7
distraught(adjective, upset, wrong, foolish, stupid)
7
mentally ill(expression, adjective, unwell, cuckoo)
6
disordered(adjective, wrong, hot, crazy, confused)
6
gaga(adjective, informal, insane, distraught)
5
buggy(adjective, slang, silly, foolish, crazy)
5
fruity(adjective, slang, silly, foolish, mad)
5
off
4
wrong(adjective, foolish, unreasonable, illogical)
3
off one's rocker(adjective, idiom)
2
around the bend(expression, adjective, idiom, wrong, confused)
2
crazy as a loon(expression, adjective, idiom, crazy, confused)
2
mad as a hatter(expression, adjective, idiom, silly, foolish)
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APASmart Define. (2015). demented thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/demented/thesaurus/synonyms
ChicagoSmart Define. 2015. "demented thesaurus" https://smartdefine.org/demented/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, demented thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/demented/thesaurus/synonyms>.
MLASmart Define. "demented thesaurus" 17 July 2015. Web. 27 September 2026. <https://smartdefine.org/demented/thesaurus/synonyms>