85 entries under significant topic. ×

4
integral(adjective, important, original, essential)
4
primordial(adjective, important, original, basic)
4
signal(important, vital, imperative)
3
salient(adjective, vital, main, middle)
3
necessary(adjective, important, original, critical)
3
rudimentary(adjective, important, original, basic)
3
underlying(adjective, top, important, original)
2
great(vital, imperative)
2
heavy(important, vital, fundamental, imperative)
2
imperative(adjective, important, critical, vital)
2
material(essential, basic, vital, imperative)
2
original(important, basic, vital, primitive)
2
primitive(top, important, original, essential)
2
requisite(adjective, important, original, essential)
2
serious(important, basic, prime, vital)
2
substantial(important, vital, imperative)
2
weighty(important, vital, imperative)
1
axiological(important, original, basic, vital)
1
axiomatic(important, original, basic, vital)
1
bottom(important, original, basic, vital)
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APASmart Define. (2015). central thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/central/thesaurus/synonyms
ChicagoSmart Define. 2015. "central thesaurus" https://smartdefine.org/central/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, central thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/central/thesaurus/synonyms>.
MLASmart Define. "central thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/central/thesaurus/synonyms>