- Definitions|2
- Thesaurus|772
- Abbreviations|0
27 entries under serious topic. ×
| marked(adjective, clear, see, substantial) | |
| memorable(adjective, unusual, important, famous, exceptional) | |
| remarkable(adjective, great, see, unusual, important) | |
| pronounced(adjective, clear, see, substantial) | |
| red-letter(adjective, great, extraordinary, unusual, important) | |
| rubric(great, extraordinary, unusual, outstanding) | |
| striking(adjective, clear, see, unusual, attractive) | |
| big-league(great, extraordinary, outstanding, prominent) | |
| bodacious(great, extraordinary, unusual, outstanding) | |
| celebrated(great, extraordinary, outstanding, prominent) | |
| eminent(adjective, unusual, outstanding, prominent) | |
| eventful(great, extraordinary, unusual, outstanding) | |
| heavy(adjective, great, extraordinary, unusual, important) | |
| high-profile(adjective, great, unusual, important, famous) | |
| major-league(adjective, great, extraordinary, unusual, important) | |
| momentous(unusual, outstanding, prominent, notable) | |
| nameable(adjective, great, unusual, important, famous) | |
| something else(expression, adjective, unusual, important, famous) | |
| top-drawer(great, extraordinary, unusual, outstanding) | |
| unusual(adjective, great, extraordinary, important, famous) |
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| APA | Smart Define. (2015). observable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/observable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "observable thesaurus" https://smartdefine.org/observable/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, observable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/observable/thesaurus/synonyms>. |
| MLA | Smart Define. "observable thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/observable/thesaurus/synonyms> |