93 entries under singular topic. ×
| valuable(adjective, good, great, excellent, fine) | |
| few and far between(expression, adjective, idiom, slight, thin) | |
| major(adjective, superior, unusual, exceptional, distinct) | |
| out of the ordinary(expression, adjective, idiom, separate, extraordinary) | |
| restricted(adjective, close, separate, light, simple) | |
| specialized(adjective, separate, superior, unusual, strange) | |
| unexampled(adjective, exceptional, exclusive, single, alone) | |
| individual(adjective, separate, simple, extraordinary, superior) | |
| certain(adjective, extraordinary, superior, unusual, exceptional) | |
| definite(adjective, extraordinary, superior, unusual, certain) | |
| express(adjective, separate, superior, unusual, exceptional) | |
| momentous(adjective, great, solid, extraordinary, superior) | |
| red-letter(adjective, great, superior, unusual, famous) | |
| semioccasional(adjective, slight, thin, exceptional, short) | |
| significant(adjective, solid, extraordinary, superior, unusual) | |
| smashing(adjective, solid, extraordinary, superior, unusual) | |
| appropriate(adjective, superior, unusual, exceptional, sophisticated) | |
| characteristic(adjective, superior, unusual, exceptional, distinct) | |
| chief(adjective, superior, unusual, exceptional, distinct) | |
| defined(adjective, superior, unusual, exceptional, special) |
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| APA | Smart Define. (2016). rare thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/rare/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "rare thesaurus" https://smartdefine.org/rare/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, rare thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/rare/thesaurus/synonyms>. |
| MLA | Smart Define. "rare thesaurus" 14 March 2016. Web. 27 September 2026. <https://smartdefine.org/rare/thesaurus/synonyms> |