64 entries under serious topic. ×
| major(adjective, great, heavy, important, significant) | |
| paramount(adjective, importance, important, significant, original) | |
| decisive(adjective, severe, big, important, significant) | |
| life-and-death(adjective, heavy, important, critical) | |
| compelling(adjective, energetic, important, lively, active) | |
| radical(adjective, great, importance, important, significant) | |
| capital(adjective, top, importance, important) | |
| exigent(adjective, big, heavy, important, significant) | |
| burning(adjective, important, essential, critical) | |
| foremost(adjective, importance, big, important, significant) | |
| leading(adjective, top, importance, important) | |
| overruling(adjective, importance, essential, basic) | |
| acute(adjective, severe, heavy, important, significant) | |
| all-important(adjective, important, significant, essential) | |
| dangerous(great, severe, important, significant) | |
| wanted(adjective, important, significant, essential) | |
| clamant(adjective, important, essential, critical) | |
| clamorous(adjective, important, essential, critical) | |
| conclusive(adjective, significant, last, critical) | |
| crying(adjective, important, essential, critical) |
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| APA | Smart Define. (2015). vital thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/vital/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "vital thesaurus" https://smartdefine.org/vital/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, vital thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/vital/thesaurus/synonyms>. |
| MLA | Smart Define. "vital thesaurus" 2 November 2015. Web. 29 September 2026. <https://smartdefine.org/vital/thesaurus/synonyms> |