4
disordered(adjective, wrong, wild, crazy, mad)
4
dotty(adjective, wrong, crazy, sick, confused)
4
loony(adjective, wrong, informal, wild, crazy)
4
not all there(expression, adjective, idiom, crazy, sick)
4
off(adjective, sane)
4
psycho
3
batty(adjective, wrong, slang, wild, crazy)
3
crackers(adjective, crazy, sick, insane)
3
crazed(adjective, wrong, wild, crazy, mad)
3
daffy(adjective, informal, sane)
3
maniac(adjective, wrong, crazy, sick, insane)
3
mentally ill(expression, adjective, crazy, sick, insane)
3
non compos mentis(expression, adjective, idiom, law, sane)
3
nuts(adjective, slang, insane, sane)
3
nutty(adjective, slang, insane, sane)
3
psychotic(adjective, insane)
3
unsettled
2
around the bend(expression, adjective, idiom, wrong, confused)
2
bananas(adjective, slang, sane)
2
blind
11 years ago|6.5k views|share |citing 
APASmart Define. (2015). brainsick thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/brainsick/thesaurus/synonyms
ChicagoSmart Define. 2015. "brainsick thesaurus" https://smartdefine.org/brainsick/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, brainsick thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/brainsick/thesaurus/synonyms>.
MLASmart Define. "brainsick thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/brainsick/thesaurus/synonyms>