- Definitions|2
- Thesaurus|2.9k
- Abbreviations|0
| hard to believe(expression, adjective, idiom) | |
| hare-brained(adjective, silly, foolish, crazy, zany) | |
| hilarious(adjective, silly, foolish, stupid, fantastic) | |
| hopeless(unreasonable, useless, absurd, intolerable, impossible) | |
| idealistic | |
| inept | |
| intolerable(adjective, extreme, immoral, shocking, atrocious) | |
| irresponsible(adjective, wrong, careless, wild, foolish) | |
| jocular(adjective, funny, ridiculous, pitiful, pathetic) | |
| loopy(adjective, knowledge, ability, informal, foolish) | |
| marvelous | |
| mirthful | |
| notional(adjective, happy, perfect, fantastic, extravagant) | |
| open to doubt(expression, idiom, extraordinary, amazing, incredible) | |
| overdone | |
| overpriced(adjective, ridiculous, excessive, expensive, steep) | |
| pathetic | |
| potty(adjective, wild, silly, foolish, stupid) | |
| pretentious(adjective, false, extravagant, excessive, expensive) | |
| puerile(adjective, silly, foolish, stupid, fantastic) |
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| APA | Smart Define. (2015). preposterous thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/preposterous/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "preposterous thesaurus" https://smartdefine.org/preposterous/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, preposterous thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/preposterous/thesaurus/synonyms>. |
| MLA | Smart Define. "preposterous thesaurus" 2 September 2015. Web. 21 September 2026. <https://smartdefine.org/preposterous/thesaurus/synonyms> |