89 entries under primary topic. ×
| bottom(adjective, important, significant, essential, basic) | |
| bottom-line(important, significant, basic, vital, fundamental) | |
| critical(fast, fundamental) | |
| deep-seated(characteristic, essential, basic, intrinsic) | |
| grass-roots(adjective, important, significant, essential, basic) | |
| leading(adjective, order, heavy, head, beginning) | |
| least(adjective, head, beginning, opening, prime) | |
| major(adjective, important, significant, essential, basic) | |
| meat-and-potatoes(adjective, important, significant, fresh, essential) | |
| necessary(adjective, body, material, important, significant) | |
| preeminent(order, extraordinary, superior, heavy, fantastic) | |
| previous(adjective, last, first, other) | |
| requisite(adjective, important, significant, essential, basic) | |
| significant(adjective, important, essential, basic, vital) | |
| slightest(adjective, head, beginning, opening, prime) | |
| smallest(adjective, head, beginning, opening, prime) | |
| substrative(adjective, important, significant, essential, basic) | |
| supporting(adjective, important, significant, essential, basic) | |
| sustaining(adjective, important, significant, essential, basic) | |
| theoretical(adjective, obscure, extraordinary, superior, important) |
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| APA | Smart Define. (2016). original thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/original/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "original thesaurus" https://smartdefine.org/original/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, original thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/original/thesaurus/synonyms>. |
| MLA | Smart Define. "original thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/original/thesaurus/synonyms> |