390 entries under adjective topic. ×

2
exacting(unreasonable, extravagant, ridiculous, excessive)
2
fancy(excessive, expensive, steep, high-priced)
2
fantastical(happy, perfect, fantastic, extravagant)
2
fatuitous
2
fishy(extraordinary, fantastic, amazing, absurd)
2
flaky(great, wrong, happy, perfect)
2
flighty(simple, careless, wild, foolish)
2
fool
2
giddy(simple, rough, careless, wild)
2
goofy(strange, foolish, stupid, fantastic)
2
hard to believe(expression, idiom)
2
hare-brained(silly, foolish, crazy, zany)
2
hilarious(silly, foolish, stupid, fantastic)
2
idealistic
2
inept
2
intolerable(extreme, immoral, shocking, atrocious)
2
irresponsible(wrong, careless, wild, foolish)
2
jocular(funny, ridiculous, pitiful, pathetic)
2
loopy(knowledge, ability, informal, foolish)
2
mirthful
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APASmart Define. (2015). preposterous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/preposterous/thesaurus/synonyms
ChicagoSmart Define. 2015. "preposterous thesaurus" https://smartdefine.org/preposterous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, preposterous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/preposterous/thesaurus/synonyms>.
MLASmart Define. "preposterous thesaurus" 2 September 2015. Web. 23 September 2026. <https://smartdefine.org/preposterous/thesaurus/synonyms>