220 entries under crazy topic. ×

12
asinine(adjective, weak, simple, silly, foolish)
12
cracked(adjective, informal, wild, silly, foolish)
11
non compos mentis(expression, adjective, idiom, law)
11
dippy(adjective, weak, simple, knowledge, slang)
11
of unsound mind(expression, adjective, idiom, silly, stupid)
11
eccentric(adjective, characteristic, person, unusual, wild)
11
fantastic(adjective, characteristic, weak, simple, strange)
11
rash(adjective, passionate, violent, silly, foolish)
11
unstable(adjective, characteristic, false, lively, foolish)
11
witless(adjective, foolish, odd, insane)
10
illogical(adjective, characteristic, wrong, false, silly)
10
imprudent(adjective, characteristic, weak, simple, wild)
10
potty(adjective, wild, silly, foolish)
10
enthusiastic(adjective, concern, passionate, silly, foolish)
10
sick(adjective, enthusiastic, ill, fervent)
9
daffy(adjective, weak, simple, informal, silly)
9
loopy(adjective, knowledge, ability, informal, foolish)
9
brainsick(adjective, wrong, confused, insane)
9
crackpot(adjective, odd, insane, lunatic)
9
harebrained(adjective, weak, simple, knowledge, ability)
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APASmart Define. (2016). mad thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/mad/thesaurus/synonyms
ChicagoSmart Define. 2016. "mad thesaurus" https://smartdefine.org/mad/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, mad thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/mad/thesaurus/synonyms>.
MLASmart Define. "mad thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/mad/thesaurus/synonyms>