64 entries under natural topic. ×
| vital(adjective, body, severe, importance, material) | |
| fundamental(noun, adjective, support, action, characteristic) | |
| basic(noun, adjective, characteristic, drop, part) | |
| necessary(noun, adjective, body, material, big) | |
| primary(adjective, body, simple, plain, importance) | |
| intrinsic(adjective, characteristic, physical, material, important) | |
| inherent(adjective, characteristic, body, reasonable, material) | |
| principal(adjective, body, importance, material, big) | |
| organic(adjective, important, significant, animate) | |
| elemental(adjective, characteristic, body, simple, plain) | |
| prime(adjective, body, importance, material, pure) | |
| innate(adjective, characteristic, body, reasonable, material) | |
| inborn(adjective, characteristic, reasonable, common, ordinary) | |
| deep-seated(adjective, characteristic, original, basic) | |
| integral(adjective, characteristic, body, importance, material) | |
| inbred(adjective, characteristic, individual, basic) | |
| constitutional(adjective, important, basic, surface) | |
| real(adjective, material, basic, genuine) | |
| ingrained(adjective, characteristic, individual, basic) | |
| internal(adjective, characteristic, basic, intimate) |
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| APA | Smart Define. (2016). essential thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/essential/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "essential thesaurus" https://smartdefine.org/essential/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, essential thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/essential/thesaurus/synonyms>. |
| MLA | Smart Define. "essential thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/essential/thesaurus/synonyms> |