- Definitions|2
- Thesaurus|575
- Abbreviations|0
| bewildering | |
| beyond reason(expression, extraordinary, strange, unbelievable, implausible) | |
| breakaway | |
| concealed(strange, indefinite, unidentified) | |
| desolate(strange, new, remote, indefinite, unidentified) | |
| distant(strange, new, remote, indefinite, unidentified) | |
| doubtful(dubious, improbable) | |
| enigmatic | |
| fantastical | |
| far(strange, new, remote, indefinite, unidentified) | |
| far-off(strange, new, remote, indefinite, unidentified) | |
| faraway(strange, new, remote, indefinite, unidentified) | |
| fascinating | |
| foreign(adjective, unusual, strange, new, remote) | |
| funny | |
| grotesque | |
| hidden(strange, indefinite, unidentified) | |
| ignotus | |
| imcomprehensible(extraordinary, strange, unbelievable, implausible, unthinkable) | |
| implausible(extraordinary, strange, doubtful, dubious, unbelievable) |
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| APA | Smart Define. (2015). unheard-of thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/unheard-of/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unheard-of thesaurus" https://smartdefine.org/unheard-of/thesaurus/synonyms (accessed October 2, 2026). |
| Harvard | Smart Define 2015, unheard-of thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/unheard-of/thesaurus/synonyms>. |
| MLA | Smart Define. "unheard-of thesaurus" 14 April 2015. Web. 2 October 2026. <https://smartdefine.org/unheard-of/thesaurus/synonyms> |