158 entries under silly topic. ×

16
unsound(adjective, characteristic, wrong, false)
15
balmy(adjective, knowledge, slang, ability, wild)
15
moronic(adjective, weak, simple, knowledge, ability)
15
touched(adjective, unusual, wild, strange)
15
unreasonable(adjective, characteristic, weak, simple, wrong)
14
imbecilic(adjective, weak, simple, knowledge, ability)
14
reckless(adjective, foolish, stupid, crazy)
12
foolhardy(adjective, characteristic, wild, foolish)
12
odd(adjective, characteristic, person, unusual, wild)
12
asinine(adjective, weak, simple, foolish)
12
cracked(adjective, informal, wild, foolish)
11
dippy(adjective, weak, simple, knowledge, slang)
11
inane(adjective, dull, simple, wild)
11
of unsound mind(expression, adjective, idiom, stupid)
11
eccentric(adjective, characteristic, person, unusual, wild)
11
rash(adjective, passionate, violent, foolish)
10
illogical(adjective, characteristic, wrong, false)
10
imprudent(adjective, characteristic, weak, simple, wild)
10
potty(adjective, wild, foolish, crazy)
10
enthusiastic(adjective, concern, passionate, foolish)
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APASmart Define. (2016). mad thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/mad/thesaurus/synonyms
ChicagoSmart Define. 2016. "mad thesaurus" https://smartdefine.org/mad/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, mad thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/mad/thesaurus/synonyms>.
MLASmart Define. "mad thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/mad/thesaurus/synonyms>