153 entries under source topic. ×
| fundamental(noun, adjective, support, action, drop) | |
| generator(noun, cause, derivation) | |
| inspiration(noun, cause, influence, reason, object) | |
| mainspring(noun, cause, reason, idea, object) | |
| stimulus(noun, cause, reason, object) | |
| action(noun, support, cause, base, beginning) | |
| ancestry(noun, cause, origin, derivation) | |
| author(noun, person, cause, reason, base) | |
| egg(cause, beginning, origin, derivation) | |
| embryo(cause, beginning, origin, derivation) | |
| essential(noun, adjective, support, action, base) | |
| keynote(noun, support, action, idea, base) | |
| keystone(noun, support, action, idea, base) | |
| parentage(noun, cause, derivation) | |
| principle(noun, support, action, drop, part) | |
| progenitor(person, cause, derivation, father) | |
| whence | |
| account(noun, cause, reason, base, call) | |
| agent(noun, cause, influence, reason, base) | |
| aim(noun, cause, reason, object, matter) |
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| APA | Smart Define. (2016). root thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/root/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "root thesaurus" https://smartdefine.org/root/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2016, root thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/root/thesaurus/synonyms>. |
| MLA | Smart Define. "root thesaurus" 2 March 2016. Web. 20 September 2026. <https://smartdefine.org/root/thesaurus/synonyms> |