8
witless(adjective, weak, simple, silly, foolish)
7
amiable(adjective, appearance, pleasant, taste, happy)
7
cockeyed(adjective, slang, crazy, mad)
7
dizzy(adjective, light, pleasant, happy, silly)
7
enjoyable(adjective, appearance, pleasant, taste, happy)
7
flaky(adjective, light, wrong, unusual, wild)
7
glad(adjective, appearance, pleasant, taste, happy)
7
inane(adjective, wild, silly, foolish, stupid)
7
jolly(adjective, appearance, pleasant, taste, happy)
7
non compos mentis(expression, adjective, law, unstable, disturbed)
7
odd(adjective, unusual, wild, strange, silly)
7
oddball(extraordinary, unusual, wild, strange, crazy)
7
sapid(adjective, appearance, taste, beauty, smell)
7
savoury(adjective, appearance, taste, beauty, smell)
7
screwball(adjective, silly, foolish, crazy, mad)
7
zany(adjective, weak, simple, wild, silly)
6
abnormal(adjective, extraordinary, unusual, wild, strange)
6
brainless(weak, simple, silly, foolish, unreasonable)
6
crack-brained(adjective, insane)
6
dumb
11 years ago|23k views|share |citing 
APASmart Define. (2015). nutty thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/nutty/thesaurus/synonyms
ChicagoSmart Define. 2015. "nutty thesaurus" https://smartdefine.org/nutty/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, nutty thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/nutty/thesaurus/synonyms>.
MLASmart Define. "nutty thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/nutty/thesaurus/synonyms>