73 entries under vital topic. ×

9
key(adjective, important, significant, essential, basic)
9
main(adjective, significant, original, essential)
9
touchy(adjective, mean, bad, difficult, delicate)
8
necessary(adjective, big, important, significant, substantial)
7
central(adjective, important, significant, essential)
7
exigent(adjective, hard, tough, difficult, big)
7
tough(adjective, hard, difficult, harsh, important)
6
indispensable(adjective, important, original, serious, essential)
6
instant(adjective, direct, prompt, importance, important)
5
compelling(adjective, important, serious, essential)
5
heavy(adjective, great, harsh, extraordinary, big)
5
ugly(adjective, mean, bad, nasty, cross)
4
high-priority(adjective, important, serious, acute)
4
life-and-death(adjective, heavy, important, serious)
4
primary(adjective, big, important, significant, substantial)
3
crying(adjective, difficult, cross, important, negative)
2
cardinal(adjective, important, original, essential, basic)
2
clamorous(adjective, hard, tough, difficult, important)
2
considerable(adjective, big, heavy, important, significant)
2
determining(big, important, significant, substantial, serious)
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APASmart Define. (2016). critical thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/critical/thesaurus/synonyms
ChicagoSmart Define. 2016. "critical thesaurus" https://smartdefine.org/critical/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, critical thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/critical/thesaurus/synonyms>.
MLASmart Define. "critical thesaurus" 16 February 2016. Web. 29 September 2026. <https://smartdefine.org/critical/thesaurus/synonyms>