74 entries under vital topic. ×

105
significant(adjective, substantial, main, importance, valuable)
79
crucial(adjective, characteristic, great, severe, significant)
76
momentous(adjective, significant, substantial, valuable, importance)
74
essential(adjective, substantial, valuable, main, importance)
72
critical(adjective, characteristic, great, significant, serious)
53
major(adjective, great, exceptional, significant, essential)
44
influential(adjective, powerful, substantial, notable, importance)
43
serious(adjective, substantial, crucial, great, importance)
40
weighty(adjective, significant, strong, substantial, importance)
34
grave(adjective, substantial, crucial, severe, importance)
30
leading(adjective, powerful, significant, essential, main)
27
principal(adjective, significant, essential, basic)
27
substantial(adjective, significant, importance, powerful, characteristic)
27
foremost(adjective, characteristic, significant, essential, main)
26
material(adjective, significant, substantial, importance, characteristic)
25
great(adjective, excellent, exceptional, valuable, characteristic)
24
urgent(adjective, characteristic, serious, critical)
22
chief(adjective, great, significant, essential, basic)
21
signal(adjective, outstanding, characteristic, great, extraordinary)
21
pivotal(adjective, characteristic, importance, significant, significance)
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APASmart Define. (2016). important thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/important/thesaurus/synonyms
ChicagoSmart Define. 2016. "important thesaurus" https://smartdefine.org/important/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, important thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/important/thesaurus/synonyms>.
MLASmart Define. "important thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/important/thesaurus/synonyms>