118 entries under silly topic. ×

11
delirious(adjective, upset, crazy, mad)
11
mental(adjective, simple, foolish, mad)
11
of unsound mind(expression, adjective, idiom, mad)
10
dotty(adjective, wrong, strange, crazy)
10
daffy(adjective, simple, informal, foolish)
10
screwy(adjective, slang, wild, foolish)
10
wild(adjective, wrong, foolish, stupid)
9
foolish(adjective, wrong, wild, strange)
9
moonstruck(adjective, foolish, stupid, mad)
9
psycho(adjective, foolish, crazy, mad)
8
barmy(adjective, foolish, crazy, mad)
8
berserk(adjective, upset, wild, foolish)
8
cuckoo(adjective, slang, wild, foolish)
7
potty(adjective, wild, foolish, crazy)
6
idiotic(adjective, wild, foolish, stupid)
6
kooky(adjective, wrong, unusual, wild, strange)
6
out to lunch(expression, adjective, idiom, mad)
5
balmy(adjective, wild, foolish, stupid)
5
buggy(adjective, slang, foolish, crazy)
5
fruity(adjective, slang, foolish, mad)
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APASmart Define. (2015). demented thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/demented/thesaurus/synonyms
ChicagoSmart Define. 2015. "demented thesaurus" https://smartdefine.org/demented/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, demented thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/demented/thesaurus/synonyms>.
MLASmart Define. "demented thesaurus" 17 July 2015. Web. 24 September 2026. <https://smartdefine.org/demented/thesaurus/synonyms>