- Definitions|2
- Thesaurus|575
- Abbreviations|0
120 entries under adjective topic. ×
| unusual(obscure, strange, exceptional, marvelous) | |
| strange(excellent, obscure, extraordinary, unusual) | |
| unknown(knowledge, obscure, strange, mysterious) | |
| exceptional(obscure, irregular, unique) | |
| extraordinary(excellent, unusual, strange, superb) | |
| rare(obscure, extraordinary, strange, special) | |
| unprecedented(obscure, exceptional, original, unique) | |
| nameless(knowledge, obscure, strange, unknown) | |
| unfamiliar(obscure, strange, exceptional, marvelous) | |
| singular(obscure, unique) | |
| obscure(knowledge, strange, unknown, unfamiliar) | |
| odd(excellent, new, exceptional, marvelous) | |
| outlandish(obscure, strange, unique, bizarre) | |
| peculiar(excellent, strange, exceptional, marvelous) | |
| remarkable(excellent, extraordinary, unusual, strange) | |
| unbelievable(obscure, extraordinary, strange, doubtful) | |
| uncommon(excellent, strange, exceptional, marvelous) | |
| unique | |
| unsung(obscure, new, remote, unknown) | |
| bizarre |
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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> |