65 entries under serious topic. ×
| all-important(adjective, important, grave, dangerous) | |
| clamorous(adjective, hard, tough, difficult, important) | |
| determining(big, important, significant, substantial) | |
| distressing(adjective, hurt, angry, sore) | |
| exceptive(adjective, severe, harsh, important) | |
| grievous(adjective, hard, great, tough, difficult) | |
| influential(adjective, great, important, significant) | |
| outstanding(adjective, great, important, lively, significant) | |
| paramount(direct, prompt, important, significant) | |
| burning(adjective, sharp, tender, important, extreme) | |
| clamant(adjective, important, extreme, essential) | |
| earth-shaking(adjective, important, significant, historic) | |
| earth-shattering(important, significant, historic) | |
| importunate(adjective, hard, tough, difficult, big) | |
| life and death(expression, idiom, great, heavy, important) | |
| major-league(adjective, great, extraordinary, important, outstanding) | |
| radical(adjective, great, important, original) | |
| afflictive(adjective, severe, heavy, acute) | |
| overshadowing(great, important) | |
| preeminent(great, important, key, chief) |
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| APA | Smart Define. (2016). critical thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/critical/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "critical thesaurus" https://smartdefine.org/critical/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, critical thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/critical/thesaurus/synonyms>. |
| MLA | Smart Define. "critical thesaurus" 16 February 2016. Web. 29 September 2026. <https://smartdefine.org/critical/thesaurus/synonyms> |