- Definitions|2
- Thesaurus|575
- Abbreviations|0
21 entries under obscure topic. ×
| unusual(adjective, strange, exceptional, marvelous) | |
| strange(adjective, excellent, extraordinary, unusual) | |
| unknown(adjective, knowledge, strange, mysterious) | |
| exceptional(adjective, irregular, unique) | |
| rare(adjective, extraordinary, strange, special) | |
| unprecedented(adjective, exceptional, original, unique) | |
| nameless(adjective, knowledge, strange, unknown) | |
| unfamiliar(adjective, strange, exceptional, marvelous) | |
| singular(adjective, unique) | |
| outlandish(adjective, strange, unique, bizarre) | |
| unbelievable(adjective, extraordinary, strange, doubtful) | |
| unsung(adjective, new, remote, unknown) | |
| inconceivable(adjective, belief, exceptional, marvelous) | |
| novel(adjective, unique) | |
| undiscovered(adjective, strange, new, remote) | |
| new(adjective, strange, exceptional, fantastic) | |
| shocking(adjective, unique) | |
| little-known(adjective, unique) | |
| unlikely(adjective, extraordinary, strange, doubtful) | |
| unrenowned(adjective, strange, new, remote) |
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| APA | Smart Define. (2015). unheard-of thesaurus. Retrieved October 1, 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 1, 2026). |
| Harvard | Smart Define 2015, unheard-of thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/unheard-of/thesaurus/synonyms>. |
| MLA | Smart Define. "unheard-of thesaurus" 14 April 2015. Web. 1 October 2026. <https://smartdefine.org/unheard-of/thesaurus/synonyms> |