271 entries under adjective topic. ×

5
harebrained(weak, simple, knowledge, ability)
5
of unsound mind(expression, idiom, silly, mad)
5
off-the-wall(crazy, mad, odd, insane)
5
strange(unusual, silly, foolish, odd)
5
twisted(crazy, mad, odd, insane)
5
unreasonable(weak, simple, wrong, silly)
5
whimsical(characteristic, person, behavior)
4
bughouse
4
delirious(crazy, mad, odd, insane)
4
dopey(knowledge, slang, ability)
4
dumb
4
fatuitous
4
hare-brained(silly, crazy, funny, zany)
4
jerky(light, knowledge, slang, ability)
4
maniacal(silly, foolish, crazy, mad)
4
non compos mentis(law, sane)
4
off the wall(expression, idiom, light, unusual)
4
tomfool(knowledge, ability, informal, foolish)
4
unearthly(knowledge, ability)
4
unhinged(simple, silly, foolish, mad)
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APASmart Define. (2016). wacky thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/wacky/thesaurus/synonyms
ChicagoSmart Define. 2016. "wacky thesaurus" https://smartdefine.org/wacky/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, wacky thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/wacky/thesaurus/synonyms>.
MLASmart Define. "wacky thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/wacky/thesaurus/synonyms>