103 entries under silly topic. ×

20
crazy(adjective, informal, strange, foolish)
19
mad(adjective, simple, foolish, crazy)
18
insane(adjective, simple, foolish, crazy)
14
deranged(adjective, simple, foolish, mad)
14
unbalanced(adjective, foolish, crazy, mad)
14
nuts(adjective, slang, foolish, crazy)
13
lunatic(adjective, simple, foolish, mad)
13
psychotic(adjective, foolish, stupid, insane)
10
daft(adjective, informal, foolish, stupid)
10
batty(adjective, foolish, stupid, crazy)
10
bonkers(adjective, simple, foolish, mad)
10
psycho(noun, adjective, slang, mad)
9
barmy(adjective, foolish, crazy, mad)
9
demented(adjective, simple, foolish, mad)
9
nutty(adjective, simple, foolish, mad)
9
screwy(adjective, foolish, crazy, mad)
9
unhinged(adjective, simple, foolish, mad)
8
balmy(adjective, foolish, unwise)
8
crazed(adjective, foolish, stupid, crazy)
8
of unsound mind(expression, adjective, idiom, mad)
11 years ago|15k views|share |citing 
APASmart Define. (2015). mental thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/mental/thesaurus/synonyms
ChicagoSmart Define. 2015. "mental thesaurus" https://smartdefine.org/mental/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, mental thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/mental/thesaurus/synonyms>.
MLASmart Define. "mental thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/mental/thesaurus/synonyms>