103 entries under important topic. ×
| grand(high, worthy, notable, lofty) | |
| grass-roots(significant, original, basic, vital) | |
| highest-ranking(adjective, high, worthy, notable) | |
| ideal(original, high, worthy, notable) | |
| illustrious(adjective, excellent, noble, high) | |
| indispensable(significant, original, serious, basic) | |
| integral(significant, original, basic, vital) | |
| intrinsic(adjective, significant, original, basic) | |
| magnificent(good, great, excellent, high) | |
| meat-and-potatoes(significant, original, basic, vital) | |
| necessary(adjective, significant, original, basic) | |
| radical(original, sophisticated, basic, vital) | |
| requisite(adjective, significant, original, basic) | |
| structural(significant, original, basic, vital) | |
| substratal(simple, significant, original, basic) | |
| substrative(significant, original, basic, vital) | |
| supporting(significant, original, basic, vital) | |
| sustaining(significant, original, basic, vital) | |
| theoretical(significant, original, basic, vital) | |
| underived(simple, significant, original, basic) |
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| APA | Smart Define. (2016). first thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/first/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "first thesaurus" https://smartdefine.org/first/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, first thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/first/thesaurus/synonyms>. |
| MLA | Smart Define. "first thesaurus" 31 March 2016. Web. 23 September 2026. <https://smartdefine.org/first/thesaurus/synonyms> |