51 entries under significant topic. ×

6
great(important, vital, imperative)
5
grave(big, important, substantial, valuable)
2
critical(adjective, big, important, substantial)
2
decisive(adjective, firm, big, substantial)
1
big(substantial, valuable, vital, imperative)
1
big-league(vital, imperative)
1
chief(adjective, big, substantial, valuable)
1
considerable(big, substantial, valuable, vital)
1
conspicuous(vital, imperative)
1
earnest(big, substantial, valuable, vital)
1
essential(big, important, substantial, serious)
1
esteemed(vital, imperative)
1
exigent(big, substantial, valuable, vital)
1
extensive(big, substantial, valuable, vital)
1
far-reaching(big, substantial, valuable, vital)
1
foremost(vital, imperative)
1
front-page(big, substantial, valuable, vital)
1
imperative(big, important, substantial, serious)
1
importunate(big, substantial, valuable, vital)
1
influential(adjective, vital, decisive, dominant)
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APASmart Define. (2016). determining thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/determining/thesaurus/synonyms
ChicagoSmart Define. 2016. "determining thesaurus" https://smartdefine.org/determining/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, determining thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/determining/thesaurus/synonyms>.
MLASmart Define. "determining thesaurus" 18 March 2016. Web. 20 September 2026. <https://smartdefine.org/determining/thesaurus/synonyms>