- Definitions|0
- Thesaurus|344
- Abbreviations|0
22 entries under unlikely topic. ×
| improbable(adjective, doubtful, likely, implausible) | |
| doubtful | |
| dubious(doubtful, implausible) | |
| far-fetched(doubtful, implausible) | |
| hundred-to-one(doubtful, implausible) | |
| iffy(doubtful, implausible) | |
| inconceivable(adjective, light, obscure, thin, strange) | |
| not expected(expression, doubtful, implausible) | |
| not likely(expression, adjective, doubtful, implausible) | |
| outside chance(expression, adjective, doubtful, implausible) | |
| questionable(doubtful, implausible) | |
| slim(doubtful, implausible) | |
| slim and none(expression, idiom, doubtful, implausible) | |
| unbelievable(doubtful, implausible) | |
| uncertain(doubtful, implausible) | |
| unconvincing(doubtful, implausible) | |
| unsubstantial(doubtful, implausible) | |
| weak(doubtful, implausible) | |
| fanciful(doubtful, implausible) | |
| implausible |
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| APA | Smart Define. (2013). unheard of thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/unheard_of/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "unheard of thesaurus" https://smartdefine.org/unheard_of/thesaurus/synonyms (accessed October 1, 2026). |
| Harvard | Smart Define 2013, unheard of thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/unheard_of/thesaurus/synonyms>. |
| MLA | Smart Define. "unheard of thesaurus" 19 May 2013. Web. 1 October 2026. <https://smartdefine.org/unheard_of/thesaurus/synonyms> |