65 entries under serious topic. ×
| major(adjective, great, heavy, important, significant) | |
| desperate(adjective, severe, intense, important, extreme) | |
| dire(adjective, severe, important, extreme) | |
| great(extraordinary, heavy, important, significant, extreme) | |
| risky(adjective, bad, delicate, heavy, important) | |
| imperative(adjective, big, important, determined, significant) | |
| necessary(adjective, big, important, significant, substantial) | |
| exigent(adjective, hard, tough, difficult, big) | |
| indispensable(adjective, important, original, essential) | |
| instant(adjective, direct, prompt, importance, important) | |
| compelling(adjective, important, essential, vital) | |
| notable(adjective, great, heavy, important, lively) | |
| principal(adjective, great, big, important, substantial) | |
| conclusive(adjective, important, determined, significant, definite) | |
| high-priority(adjective, important, vital, acute) | |
| life-and-death(adjective, heavy, important, vital) | |
| crying(adjective, difficult, cross, important, negative) | |
| heavyweight(adjective, great, big, heavy, important) | |
| integral(adjective, important, essential, basic) | |
| meaningful(adjective, great, important, significant, substantial) |
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| APA | Smart Define. (2016). critical thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/critical/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "critical thesaurus" https://smartdefine.org/critical/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, critical thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/critical/thesaurus/synonyms>. |
| MLA | Smart Define. "critical thesaurus" 16 February 2016. Web. 28 September 2026. <https://smartdefine.org/critical/thesaurus/synonyms> |