64 entries under serious topic. ×
| important(adjective, great, severe, importance, heavy) | |
| essential(adjective, body, severe, importance, material) | |
| critical(adjective, great, severe, big, heavy) | |
| crucial(adjective, great, severe, big, heavy) | |
| necessary(adjective, body, material, big, important) | |
| indispensable(adjective, important, significant, original) | |
| momentous(adjective, severe, importance, big, heavy) | |
| urgent(adjective, severe, big, heavy, important) | |
| imperative(adjective, big, important, significant, substantial) | |
| significant(adjective, great, importance, big, heavy) | |
| integral(adjective, body, importance, material, important) | |
| weighty(adjective, great, severe, importance, big) | |
| pivotal(adjective, important, significant, critical) | |
| consequential(adjective, importance, heavy, important, significant) | |
| required(adjective, important, significant, essential) | |
| pressing(adjective, big, heavy, important, significant) | |
| influential(adjective, great, energetic, importance, important) | |
| outstanding(adjective, great, importance, important, significant) | |
| principal(adjective, body, great, importance, material) | |
| chief(adjective, importance, big, important, significant) |
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| APA | Smart Define. (2015). vital thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/vital/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "vital thesaurus" https://smartdefine.org/vital/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, vital thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/vital/thesaurus/synonyms>. |
| MLA | Smart Define. "vital thesaurus" 2 November 2015. Web. 28 September 2026. <https://smartdefine.org/vital/thesaurus/synonyms> |