- Definitions|2
- Thesaurus|1.5k
- Abbreviations|0
33 entries under adjective topic. ×
| unbelievable(unsound, plausible) | |
| incredible(bad, unsound, unbelievable, unremarkable) | |
| improbable(unsound, unbelievable) | |
| unlikely(reasonable, unsound, likely, unbelievable) | |
| impossible(unsound, unbelievable) | |
| untrustworthy(unsound, unbelievable) | |
| implausible(reasonable, unsound, unbelievable, plausible) | |
| undependable(unsound, unbelievable) | |
| unreliable(unsound, unbelievable) | |
| unsound | |
| inconceivable(reasonable, unsound, unbelievable, imaginable) | |
| unimaginable(unsound, unbelievable) | |
| unthinkable(unusual, incredible) | |
| unconvincing | |
| doubtful | |
| fantastic | |
| questionable | |
| unreasonable(unsound, unbelievable) | |
| untenable(unsound, unbelievable) | |
| cranky |
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| APA | Smart Define. (2015). credible thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/credible/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "credible thesaurus" https://smartdefine.org/credible/thesaurus/antonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, credible thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/credible/thesaurus/antonyms>. |
| MLA | Smart Define. "credible thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/credible/thesaurus/antonyms> |