68 entries under fundamental topic. ×
| origin(noun, law, regulation, company, person) | |
| root(noun, support, action, person, cause) | |
| cause(noun, support, regulation, action, person) | |
| basis(noun, law, action, cause, start) | |
| base(noun, support, regulation, action, part) | |
| antecedent(noun, support, action, cause, point) | |
| authority(noun, support, action, person, cause) | |
| foundation(noun, law, regulation, cause, start) | |
| principle(noun, law, support, action, cause) | |
| reason(noun, support, regulation, action, cause) | |
| core(noun, support, action, cause, start) | |
| nucleus(noun, support, action, cause, start) | |
| evidence(noun, support, action, information, base) | |
| ground(noun, law, regulation, cause, start) | |
| rudiment(noun, support, action, start, top) | |
| action(noun, support, cause, base, beginning) | |
| assumption(noun, law, support, regulation, action) | |
| axiom(noun, law, support, regulation, action) | |
| backbone(noun, support, action, base, beginning) | |
| background(noun, support, company, action, place) |
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| APA | Smart Define. (2015). source thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/source/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "source thesaurus" https://smartdefine.org/source/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, source thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/source/thesaurus/synonyms>. |
| MLA | Smart Define. "source thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/source/thesaurus/synonyms> |