64 entries under vital topic. ×

6
momentous(adjective, good, bad, great, excellent)
5
elementary(adjective, top, original, essential, basic)
5
significant(adjective, good, superior, unusual, important)
4
grave(head, significant, imperative)
4
serious(significant, basic, prime, imperative)
3
substantial(adjective, significant, imperative)
2
considerable(significant, imperative)
2
heavy(quality, tough, superior, significant, prime)
2
indispensable(adjective, important, original, serious, capital)
2
influential(adjective, significant, usual, chief)
2
large(adjective, significant, imperative)
1
conspicuous(adjective, wonderful, exceptional, marvelous, significant)
1
constitutional(adjective, top, essential, basic, prime)
1
exceptional(adjective, bad, great, excellent, superior)
1
imperative(important, significant, capital, essential)
1
initial(adjective, top, important, original, prominent)
1
marked(adjective, superior, unusual, wonderful, exceptional)
1
material(adjective, good, important, powerful, significant)
1
primitive(adjective, top, original, essential, basic)
1
salient(adjective, important, wonderful, exceptional, marvelous)
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APASmart Define. (2016). main thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/main/thesaurus/synonyms
ChicagoSmart Define. 2016. "main thesaurus" https://smartdefine.org/main/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, main thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/main/thesaurus/synonyms>.
MLASmart Define. "main thesaurus" 29 March 2016. Web. 28 September 2026. <https://smartdefine.org/main/thesaurus/synonyms>