147 entries under fundamental topic. ×
| concealed(adjective, original, primary, latent) | |
| de rigueur(expression, adjective, significant, essential, vital) | |
| empyreal(adjective, essential, supreme) | |
| empyrean(adjective, essential, supreme) | |
| essential element(noun, expression, shorts, undercarriage) | |
| exigent(adjective, significant, essential, vital) | |
| expedient(adjective, significant, essential, vital) | |
| fire and ice(noun, expression, idiom, condition, essence) | |
| hidden(adjective, original, primary, latent) | |
| incomparable(adjective, essential, prime, key) | |
| incumbent on(expression, adjective, significant, essential, vital) | |
| larval(simple, elementary) | |
| lifeblood(noun, essential, necessity, quintessence) | |
| lurking(adjective, original, primary, latent) | |
| max(adjective, essential, supreme) | |
| maxi(adjective, essential, supreme) | |
| maximum(adjective, essential, prime, key) | |
| most(adjective, essential, supreme) | |
| nitty gritty(noun, expression, shorts, undercarriage) | |
| no-frills(noun, adjective, ordinary, mediocre) |
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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> |