85 entries under significant topic. ×
| integral(adjective, important, original, essential) | |
| primordial(adjective, important, original, basic) | |
| signal(important, vital, imperative) | |
| salient(adjective, vital, main, middle) | |
| necessary(adjective, important, original, critical) | |
| rudimentary(adjective, important, original, basic) | |
| underlying(adjective, top, important, original) | |
| great(vital, imperative) | |
| heavy(important, vital, fundamental, imperative) | |
| imperative(adjective, important, critical, vital) | |
| material(essential, basic, vital, imperative) | |
| original(important, basic, vital, primitive) | |
| primitive(top, important, original, essential) | |
| requisite(adjective, important, original, essential) | |
| serious(important, basic, prime, vital) | |
| substantial(important, vital, imperative) | |
| weighty(important, vital, imperative) | |
| axiological(important, original, basic, vital) | |
| axiomatic(important, original, basic, vital) | |
| bottom(important, original, basic, vital) |
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| APA | Smart Define. (2015). central thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/central/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "central thesaurus" https://smartdefine.org/central/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, central thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/central/thesaurus/synonyms>. |
| MLA | Smart Define. "central thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/central/thesaurus/synonyms> |