90 entries under original topic. ×
| primogenial(adjective, head, beginning, opening) | |
| substratal(adjective, simple, plain, important, significant) | |
| advanced(head, better, prime, arch) | |
| ahead(adjective, head, beginning, opening) | |
| antecedent(adjective, head, beginning, opening) | |
| axiological(adjective, important, significant, essential) | |
| axiomatic(important, basic, vital) | |
| bottom-line(adjective, important, significant, essential) | |
| commencing(adjective, first, previous, early) | |
| deep(adjective, basic) | |
| deep-seated(adjective, essential, basic, absolute) | |
| grass-roots(adjective, important, significant, essential) | |
| least(adjective, head, beginning, opening) | |
| meat-and-potatoes(adjective, base, important, significant, last) | |
| nitty-gritty(adjective, basic, absolute, fundamental) | |
| nub(adjective, basic, absolute, fundamental) | |
| root(adjective, basic, fundamental, latent) | |
| slightest(adjective, head, beginning, opening) | |
| smallest(adjective, head, beginning, opening) | |
| structural(material, important, natural, basic) |
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| APA | Smart Define. (2016). primary thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/primary/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "primary thesaurus" https://smartdefine.org/primary/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, primary thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/primary/thesaurus/synonyms>. |
| MLA | Smart Define. "primary thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/primary/thesaurus/synonyms> |