5
something(adjective, substantial, feature, characteristic, big)
5
striking(adjective, great, solid, extraordinary, unusual)
5
top-level(adjective, characteristic, power, influence)
5
unusual(adjective, solid, extraordinary, strange, wonderful)
4
VIP(adjective, noun, characteristic, importance, famous)
4
appreciable(adjective, significant, substantial, large)
4
aristocratic(adjective, characteristic, importance, outstanding, worthy)
4
big-name(adjective, famous, well-known, renowned, red-carpet)
4
constitutive(adjective, importance, valuable, essential, main)
4
efficacious(adjective, strong, powerful, significant, useful)
4
forceful(adjective, energetic, powerful, significant, noble)
4
full(adjective, lively, comfortable, wealth, safe)
4
head(noun, adjective, characteristic, influence, importance)
4
heavyweight(adjective, great, big, heavy, significant)
4
helpful(adjective, excellent, sensible, useful, valuable)
4
high-powered(adjective, famous, distinguished, eminent, renowned)
4
high-priority(adjective, characteristic, influence, importance)
4
imperious(adjective, characteristic, influence, importance, authoritative)
4
instrumental(adjective, strong, powerful, significant, useful)
4
needful(adjective, essential, vital, fundamental, reliable)
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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>