3
whimsical(adjective, happy, perfect, strange, funny)
2
astonishing(extraordinary, amazing, greatness, incredible)
2
bombastic(exaggeration, ridiculousness)
2
brainless(adjective, weak, simple, silly, foolish)
2
contradictory(adjective, foolish, stupid, senseless, absurd)
2
disgraceful(adjective, immoral, shocking, shameful, atrocious)
2
dreamy
2
enormous(adjective, great, extraordinary, unreasonable, amazing)
2
exacting(adjective, unreasonable, extravagant, ridiculous, excessive)
2
false(wrong, awkward, irregular, irrational, unsuitable)
2
fancy(adjective, excessive, expensive, steep, high-priced)
2
fantastical(adjective, happy, perfect, fantastic, extravagant)
2
fatuitous
2
fishy(adjective, extraordinary, fantastic, amazing, absurd)
2
flaky(adjective, great, wrong, happy, perfect)
2
flighty(adjective, simple, careless, wild, foolish)
2
fool(noun, adjective)
2
giddy(adjective, simple, rough, careless, wild)
2
goofy(adjective, strange, foolish, stupid, fantastic)
2
half-baked(weak, simple, careless, foolish, stupid)
11 years ago|25k views|share |citing 
APASmart Define. (2015). preposterous thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/preposterous/thesaurus/synonyms
ChicagoSmart Define. 2015. "preposterous thesaurus" https://smartdefine.org/preposterous/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, preposterous thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/preposterous/thesaurus/synonyms>.
MLASmart Define. "preposterous thesaurus" 2 September 2015. Web. 21 September 2026. <https://smartdefine.org/preposterous/thesaurus/synonyms>