119 entries under significant topic. ×

15
capital(adjective, quality, bad, great, tough)
15
central(adjective, characteristic, lead, important, head)
15
key(adjective, lead, important, head)
13
outstanding(adjective, bad, great, tough, top)
12
basic(adjective, important, essential, prime)
12
fundamental(adjective, characteristic, important, essential)
10
momentous(adjective, bad, great, excellent, superior)
10
overriding(adjective, important, serious, prime)
9
vital(adjective, importance, big, important)
8
prominent(adjective, important, wonderful, famous, exceptional)
6
great(adjective, bad, excellent, big, heavy)
6
necessary(adjective, big, important, substantial)
6
notable(noun, adjective, great, extraordinary, unusual)
6
pivotal(adjective, important, serious, prime)
5
elementary(adjective, top, original, essential)
5
focal(important, key, main, middle)
5
noteworthy(adjective, extraordinary, unusual, important, wonderful)
5
salient(adjective, big, important, wonderful, exceptional)
4
crucial(adjective, great, big, heavy, important)
4
radical(importance, important, essential, fundamental)
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APASmart Define. (2016). chief thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/chief/thesaurus/synonyms
ChicagoSmart Define. 2016. "chief thesaurus" https://smartdefine.org/chief/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, chief thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/chief/thesaurus/synonyms>.
MLASmart Define. "chief thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/chief/thesaurus/synonyms>