13
barmy
13
nuts(adjective, slang, sane)
12
batty(adjective, slang, sane)
12
bonkers(adjective, informal, sane)
12
dotty(adjective, silly, crazy, sick, sane)
12
loony(adjective, informal, sane)
11
balmy
11
loco(adjective, slang, crazy, sick, sane)
11
nutty(adjective, slang, sane)
10
crazy(adjective, silly, sick, disturbed, irrational)
10
daft(adjective, stupid, crazy, sane)
9
bats
9
buggy(adjective, slang, sane, off, dotty)
9
fruity(adjective, slang, insane, sane)
9
kooky
9
loopy
9
mad(adjective, sane)
9
wacky(adjective, slang, sane)
8
bananas(adjective, slang, sane)
8
cracked(adjective, informal, sane)
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APASmart Define. (2015). crackers thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/crackers/thesaurus/synonyms
ChicagoSmart Define. 2015. "crackers thesaurus" https://smartdefine.org/crackers/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, crackers thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/crackers/thesaurus/synonyms>.
MLASmart Define. "crackers thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/crackers/thesaurus/synonyms>