129 entries under crazy topic. ×

15
nonsensical(adjective, knowledge, ability, foolish)
15
psycho(noun, adjective, person, slang)
15
screwball(noun, adjective, slang, wild, silly)
14
deranged(noun, adjective, wild, silly, foolish)
14
kooky(adjective, weak, simple, wrong, wild)
14
madman(noun, adjective, person, mad)
14
mental(noun, adjective, slang, informal, foolish)
14
nut(noun, slang, sick, wise)
13
cracked(adjective, informal, wild, silly, foolish)
13
loopy(adjective, knowledge, ability, informal, foolish)
13
silly(adjective, light, weak, simple, wrong)
12
fatuous(adjective, weak, simple, wild, strange)
12
idiotic(adjective, weak, simple, knowledge, ability)
12
preposterous(adjective, weak, simple, wrong, knowledge)
12
senseless(adjective, mad, odd, insane)
12
unbalanced(adjective, silly, foolish, sane)
11
daffy(adjective, weak, simple, pleasant, happy)
11
goofy(adjective, light, foolish, stupid)
11
moronic(adjective, weak, simple, knowledge, ability)
10
bananas(adjective, slang, mad, sane)
11 years ago|25k views|share |citing 
APASmart Define. (2015). loony thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/loony/thesaurus/synonyms
ChicagoSmart Define. 2015. "loony thesaurus" https://smartdefine.org/loony/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, loony thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/loony/thesaurus/synonyms>.
MLASmart Define. "loony thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/loony/thesaurus/synonyms>