137 entries under significant topic. ×

2
governing(adjective, strong, powerful, prominent)
2
grievous(adjective, great, tough, severe, heavy)
2
honorable(adjective, fine, powerful, grand)
2
intrinsic(adjective, original, substantial, serious)
2
lofty(adjective, fine, famous, noble)
2
puissant(adjective, fine, grand, critical)
2
radical(adjective, great, original, serious)
2
red-letter(adjective, great, extraordinary, unusual, famous)
2
rudimentary(adjective, original, basic, vital)
2
sublime(adjective, fine, powerful, grand)
2
superlative(adjective, bad, great, excellent, fine)
2
underlying(adjective, original, essential, basic)
2
venerable(adjective, big, substantial, large)
1
ad rem(expression, substantial, serious, related)
1
admired(adjective, famous, useful, reliable)
1
certain(adjective, energetic, vigorous, definite)
1
charged(adjective, weighty, loaded)
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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>