- Definitions|0
- Thesaurus|160
- Abbreviations|0
| crazy(adjective, calm, sound, fantastic, unrealistic) | |
| paranoid | |
| impalpable(adjective, palpable, unsubstantial, intangible) | |
| aper(calm, sound) | |
| bad | |
| bats in the belfry(expression, idiom, calm, sound) | |
| beyond all reason(expression, idiom, reasonable, sensible) | |
| beyond reason(expression, reasonable, sensible) | |
| derisory(reasonable, sensible) | |
| dishonorable(adjective, bad) | |
| disrespected(adjective, bad, superstar, meritable, palmary) | |
| doubtful(adjective, weak, insignificant) | |
| dubious(adjective, weak, insignificant) | |
| ill-conceived(reasonable, sensible) | |
| implausible(adjective, weak, insignificant) | |
| impossible(adjective, inapt) | |
| impotent(adjective, weak, insignificant) | |
| improbable(adjective, weak, insignificant) | |
| inapt | |
| incredible(adjective, weak, insignificant) |
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| APA | Smart Define. (2011). believeable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/believeable/thesaurus/antonyms |
| Chicago | Smart Define. 2011. "believeable thesaurus" https://smartdefine.org/believeable/thesaurus/antonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2011, believeable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/believeable/thesaurus/antonyms>. |
| MLA | Smart Define. "believeable thesaurus" 23 May 2011. Web. 22 September 2026. <https://smartdefine.org/believeable/thesaurus/antonyms> |