70 entries under ridiculous topic. ×

6
meaningless(adjective, simple, false, silly, stupid)
5
unintelligent(adjective, weak, simple, silly, foolish)
4
balmy(adjective, simple, wild, silly, foolish)
4
flighty(adjective, simple, careless, foolish, stupid)
4
foolhardy(adjective, simple, careless, wild, silly)
4
irresponsible(adjective, wrong, wild, silly, foolish)
4
strange(unusual, silly, foolish, unwise)
3
cockamamie(adjective, weak, simple, silly, foolish)
3
frivolous(adjective, simple, foolish, stupid, crazy)
3
impractical(adjective, wrong, wild, silly, foolish)
3
pointless(adjective, simple, silly, foolish, stupid)
2
flaky(adjective, informal, unusual, wild, strange)
2
giddy(adjective, weak, simple, rough, foolish)
2
goofy(strange, silly, foolish, stupid, senseless)
2
harebrained(adjective, weak, simple, careless, wild)
2
ignorant(adjective, simple, foolish, stupid, crazy)
2
purposeless(adjective, silly, stupid, insignificant)
2
trivial(adjective, silly, stupid, insignificant)
2
useless(adjective, absurd, pointless, vain)
2
vain(adjective, absurd, pointless, meaningless)
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APASmart Define. (2015). irrational thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/irrational/thesaurus/synonyms
ChicagoSmart Define. 2015. "irrational thesaurus" https://smartdefine.org/irrational/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, irrational thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/irrational/thesaurus/synonyms>.
MLASmart Define. "irrational thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/irrational/thesaurus/synonyms>