147 entries under fundamental topic. ×
| latent(adjective, characteristic, natural, original, essential) | |
| mandatory(adjective, significant, essential, vital) | |
| meaningful(important, essential, critical, imperative) | |
| name(important, essential, critical, key) | |
| name-of-the-game(important, essential, critical, key) | |
| name of game(noun, expression, adjective, idiom, significant) | |
| nitty-gritty(noun, adjective, law, important, emotion) | |
| nub(noun, adjective, emotion, original, essential) | |
| quintessential(adjective, important, significant, essential, vital) | |
| simplest(simple, straightforward, uncomplicated, elementary) | |
| underlined(important, essential, critical, key) | |
| universal law(noun, expression, rule, belief, statement) | |
| unwritten rule(noun, expression, rule, belief, statement) | |
| urgent(adjective, important, significant, essential, critical) | |
| vital part(noun, expression, condition, essential, essence) | |
| all-important(adjective, significant, essential, vital) | |
| bare-bones(noun, simple, stark, shorts) | |
| binding(adjective, significant, essential, vital) | |
| categorical(adjective, essential, supreme) | |
| compelling(adjective, significant, essential, vital) |
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| APA | Smart Define. (2015). basic thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/basic/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "basic thesaurus" https://smartdefine.org/basic/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, basic thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/basic/thesaurus/synonyms>. |
| MLA | Smart Define. "basic thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/basic/thesaurus/synonyms> |