91 entries under original topic. ×
| supporting(important, significant, basic, vital) | |
| sustaining(important, significant, basic, vital) | |
| theoretical(important, significant, basic, vital) | |
| underived(simple, important, significant, basic) | |
| autochthonous(previous, initial, indigenous) | |
| deep(basic, primary) | |
| deep-seated(basic, primary) | |
| inchoate(beginning, opening, primary, early) | |
| originator | |
| untried(leading-edge, pioneering, trailblazing) | |
| unused(leading-edge, pioneering, trailblazing) |
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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> |