154 entries under unusual topic. ×
| express(adjective, separate, superior, exceptional) | |
| heavy(exceptional, marvelous, special, serious) | |
| impressive(adjective, extraordinary, superb, wonderful) | |
| momentous(adjective, great, solid, extraordinary, superior) | |
| mysterious(strange, heavenly, peculiar, metaphysical) | |
| noticeable(solid, extraordinary, outstanding, serious) | |
| primo(solid, extraordinary, exceptional, outstanding) | |
| red-letter(adjective, great, superior, famous) | |
| significant(adjective, solid, extraordinary, superior) | |
| smashing(adjective, solid, extraordinary, superior) | |
| something else(expression, adjective, separate, great) | |
| surprising(adjective, solid, extraordinary, strange) | |
| zero cool(expression, adjective, good, great, excellent) | |
| appropriate(adjective, superior, exceptional, sophisticated) | |
| arcane | |
| arresting(solid, extraordinary, outstanding, notable) | |
| arrestive(solid, extraordinary, exceptional, outstanding) | |
| avant-garde(extraordinary, strange, new, fresh) | |
| bodacious(outstanding, serious, prominent, distinguished) | |
| celebrious(outstanding, serious, prominent, distinguished) |
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| APA | Smart Define. (2016). rare thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/rare/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "rare thesaurus" https://smartdefine.org/rare/thesaurus/synonyms (accessed October 1, 2026). |
| Harvard | Smart Define 2016, rare thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/rare/thesaurus/synonyms>. |
| MLA | Smart Define. "rare thesaurus" 14 March 2016. Web. 1 October 2026. <https://smartdefine.org/rare/thesaurus/synonyms> |