92 entries under primary topic. ×
| substrative(important, significant, original, basic, vital) | |
| supporting(important, significant, original, basic, vital) | |
| sustaining(important, significant, original, basic, vital) | |
| theoretical(important, significant, original, basic, vital) | |
| unrivaled(adjective, bad, tough, top, perfect) | |
| brand-new(leading-edge, pioneering, trailblazing, initial) | |
| deep(original, basic) | |
| deep-seated(original, basic) | |
| especial(adjective, superior, unusual, exceptional, distinct) | |
| inchoate(beginning, opening, original, early) | |
| momentous(adjective, superior, unusual, exceptional, distinct) | |
| recent(leading-edge, pioneering, trailblazing, initial) |
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| APA | Smart Define. (2016). first thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/first/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "first thesaurus" https://smartdefine.org/first/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, first thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/first/thesaurus/synonyms>. |
| MLA | Smart Define. "first thesaurus" 31 March 2016. Web. 21 September 2026. <https://smartdefine.org/first/thesaurus/synonyms> |