2
bughouse
2
cuckoo(adjective, wrong, slang, wild, crazy)
2
fruity(adjective, slang, sane)
2
haywire
2
imbalanced
2
irrational(adjective, wrong, wild, crazy, confused)
2
mad as a hatter(adjective, idiom, crazy, sick, insane)
2
maniacal(adjective, insane, sane)
2
muzzy(adjective, inattention)
2
odd
2
of unsound mind(expression, adjective, idiom, wrong, sane)
2
sick in the head(expression, adjective, idiom, wrong, crazy)
2
stark raving mad(expression, adjective, idiom, crazy, sick)
1
abnormal
1
bad
1
barmy
1
bats
1
bizarre(adjective, wrong, wild, crazy, mad)
1
buggy(adjective, slang, sane)
1
bugs
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>