65 entries under mad topic. ×

13
loopy(adjective, knowledge, ability, informal, foolish)
12
senseless(adjective, crazy, odd, insane)
11
daffy(adjective, weak, simple, pleasant, happy)
10
bananas(adjective, slang, crazy, sane)
10
crazed(adjective, wild, silly, foolish, stupid)
10
touched(adjective, wrong, informal, wild, silly)
9
buggy(adjective, slang, silly, foolish, crazy)
9
harebrained(adjective, weak, simple, knowledge, ability)
9
potty(adjective, wild, silly, foolish, stupid)
9
witless(adjective, foolish, crazy, odd)
8
bedlamite(noun, adjective, person, keen, warm)
8
irrational(adjective, weak, simple, careless, wild)
7
eccentric(noun, adjective, wild, strange, silly)
7
wild(adjective, wrong, strange, silly, foolish)
6
delirious(adjective, crazy, odd, insane)
6
distraught(adjective, wrong, foolish, stupid, crazy)
6
ridiculous(adjective, light, weak, simple, wrong)
5
off-the-wall(adjective, wrong, pleasant, happy, foolish)
3
cockamamie(adjective, weak, simple, wrong, silly)
3
odd(adjective, wild, strange, silly, foolish)
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APASmart Define. (2015). loony thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/loony/thesaurus/synonyms
ChicagoSmart Define. 2015. "loony thesaurus" https://smartdefine.org/loony/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, loony thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/loony/thesaurus/synonyms>.
MLASmart Define. "loony thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/loony/thesaurus/synonyms>