65 entries under serious topic. ×
| star(great, important, key, chief) | |
| stellar(great, important, key, chief) | |
| sudden | |
| top(great, important) | |
| very important(expression, severe) |
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Critical on
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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> |