202 entries under fundamental topic. ×
| needful(adjective, set, important, significant, original) | |
| basal(adjective, body, simple, plain, material) | |
| capital(adjective, importance, important, prominent, prime) | |
| essence(noun, nature, feature, support, action) | |
| significant(adjective, importance, big, important, original) | |
| absolute(adjective, physical, material, true, basic) | |
| congenital(adjective, reasonable, natural, basic) | |
| indwelling(adjective, characteristic, natural, basic, intimate) | |
| intimate(adjective, characteristic, natural, basic) | |
| need(noun, verb, concern, condition, demand) | |
| urgent(adjective, severe, big, important, significant) | |
| demand(noun, right, concern, want, need) | |
| principle(noun, adjective, support, action, drop) | |
| rudiment(noun, support, action, drop, part) | |
| simple(adjective, hard, severe, rough, plain) | |
| desideratum(noun, right, concern, demand, want) | |
| heart(noun, support, action, base, importance) | |
| native(adjective, characteristic, reasonable, common, ordinary) | |
| plain(adjective, simple, pure, straightforward, basic) | |
| primitive(adjective, body, simple, plain, material) |
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| APA | Smart Define. (2016). essential thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/essential/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "essential thesaurus" https://smartdefine.org/essential/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, essential thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/essential/thesaurus/synonyms>. |
| MLA | Smart Define. "essential thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/essential/thesaurus/synonyms> |