202 entries under fundamental topic. ×
| principal element(noun, expression, support, action, base) | |
| proof(noun, support, action, base, beginning) | |
| reason(noun, support, action, base, beginning) | |
| root(noun, adjective, support, action, base) | |
| sanction(noun, support, action, base, beginning) | |
| security(noun, support, action, base, beginning) | |
| simplest(simple, straightforward, basic, uncomplicated) | |
| simplex(simple, straightforward, basic, uncomplicated) | |
| simplified(simple, straightforward, basic, uncomplicated) | |
| source(noun, support, action, base, beginning) | |
| substratum(noun, support, action, base, beginning) | |
| support(noun, action, base, beginning, source) | |
| theorem(noun, support, action, base, beginning) | |
| theory(noun, support, action, base, beginning) | |
| uncomplex(simple, straightforward, basic, uncomplicated) | |
| uncomplicated(simple, straightforward, basic, unsophisticated) | |
| underpinning(noun, support, action, base, beginning) | |
| urgency(noun, right, concern, demand, want) | |
| warrant(noun, support, action, base, beginning) | |
| bare-bones(shorts, undercarriage) |
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| APA | Smart Define. (2016). essential thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/essential/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "essential thesaurus" https://smartdefine.org/essential/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, essential thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/essential/thesaurus/synonyms>. |
| MLA | Smart Define. "essential thesaurus" 31 March 2016. Web. 27 September 2026. <https://smartdefine.org/essential/thesaurus/synonyms> |