200 entries under adjective topic. ×
| quintessential(essential, required, needed) | |
| all-important(essential, required, needed) | |
| automatic | |
| basal(body, material, important, significant) | |
| expedient(essential, required, wanted, needed) | |
| inerrant(certain, inevitable) | |
| inevasible(certain, obvious, inevitable, inescapable) | |
| logical(clear, sound, reasonable, rational) | |
| of the essence(expression, idiom, important, essential) | |
| underlying(important, significant, original, essential) | |
| absolute | |
| bottom-line(important, significant, original, essential) | |
| called-for(important, serious, essential, critical) | |
| consequential(important, prominent, exalted) | |
| elemental(body, material, important, significant) | |
| high(important, prominent, exalted) | |
| influential(great, big, important, significant) | |
| intrinsic(important, significant, original, essential) | |
| primitive(body, material, important, significant) | |
| serious(big, important, significant, substantial) |
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| APA | Smart Define. (2015). necessary thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/necessary/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "necessary thesaurus" https://smartdefine.org/necessary/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, necessary thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/necessary/thesaurus/synonyms>. |
| MLA | Smart Define. "necessary thesaurus" 2 November 2015. Web. 25 September 2026. <https://smartdefine.org/necessary/thesaurus/synonyms> |