149 entries under important topic. ×
| sacred(grand, esteemed, respected, august) | |
| something else(expression, adjective, unusual, famous) | |
| special | |
| splash(adjective, unusual, exceptional, remarkable) | |
| stable(adjective, strong, solid, big) | |
| sturdy(adjective, strong, hard, tough, solid) | |
| super(adjective, good, great, unusual) | |
| terrific(adjective, great, unusual, exceptional) | |
| underlined(adjective, big, unusual, heavy) | |
| unusual(adjective, great, extraordinary, famous) | |
| utmost(adjective, unusual, exceptional, remarkable) | |
| valuable(adjective, good, big, significant) | |
| worthwhile(adjective, strong, solid, big) | |
| all-consuming | |
| carrying a lot of weight(expression, idiom, noteworthy) | |
| end(exceptional, remarkable, notable, striking) | |
| eternal | |
| high-level(adjective, prominent, exalted, intensive) | |
| high-ranking(adjective, prominent, exalted) | |
| overshadowing |
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| APA | Smart Define. (2016). serious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/serious/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "serious thesaurus" https://smartdefine.org/serious/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, serious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/serious/thesaurus/synonyms>. |
| MLA | Smart Define. "serious thesaurus" 24 February 2016. Web. 24 September 2026. <https://smartdefine.org/serious/thesaurus/synonyms> |