137 entries under significant topic. ×

10
extraordinary(adjective, outstanding, worthy, great, unusual)
10
fundamental(adjective, essential, basic, main)
10
potent(adjective, powerful, effective, strong, eminent)
10
telling(adjective, strong, energetic, powerful)
10
respected(adjective, useful, beneficial, characteristic, power)
9
memorable(adjective, great, importance, unusual, lively)
9
predominant(adjective, essential, main, bad, great)
9
fateful(adjective, importance, valuable, main)
9
noble(adjective, prominent, loud, eminent, influential)
9
preeminent(adjective, great, outstanding, eminent, bad)
9
renowned(adjective, great, big, famous, outstanding)
8
eventful(adjective, bad, great, excellent, extraordinary)
8
exigent(adjective, serious, essential, vital, feature)
8
famed(adjective, famous, outstanding, critical)
8
large(adjective, famous, familiar, substantial)
8
marked(adjective, extraordinary, substantial, prominent)
8
organic(adjective, original, basic, vital)
8
prestigious(adjective, characteristic, power, influence, famous)
7
controlling(adjective, powerful, strong, effective, characteristic)
7
far-reaching(adjective, characteristic, feature, severe, importance)
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APASmart Define. (2016). important thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/important/thesaurus/synonyms
ChicagoSmart Define. 2016. "important thesaurus" https://smartdefine.org/important/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, important thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/important/thesaurus/synonyms>.
MLASmart Define. "important thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/important/thesaurus/synonyms>