197 entries under important topic. ×

5
life-and-death(adjective, heavy, serious, critical)
5
life-or-death(essential, critical, basic, fundamental)
4
chief(adjective, great, big, heavy)
4
clamorous(adjective, serious, essential, critical)
4
crying(adjective, serious, essential, critical)
4
determining(adjective, big, significant, substantial)
4
meaningful(adjective, great, severe, significant)
4
notable(adjective, great, heavy, lively)
4
required(adjective, significant, serious, capital)
4
underlying(adjective, original, basic, vital)
3
conclusive(adjective, determined, significant, serious)
3
distinguished(adjective, great, extraordinary, significant)
3
elementary(adjective, significant, original, essential)
3
heavyweight(adjective, great, big, heavy)
3
historic(great, extraordinary, lively, significant)
3
insistent(adjective, critical)
3
needed(adjective, significant, capital, essential)
3
needful(adjective, significant, original, capital)
3
noteworthy
3
obligatory(adjective, significant, essential, critical)
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APASmart Define. (2016). crucial thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/crucial/thesaurus/synonyms
ChicagoSmart Define. 2016. "crucial thesaurus" https://smartdefine.org/crucial/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, crucial thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/crucial/thesaurus/synonyms>.
MLASmart Define. "crucial thesaurus" 11 March 2016. Web. 29 September 2026. <https://smartdefine.org/crucial/thesaurus/synonyms>