90 entries under beginning topic. ×
| origin(noun, person, body, cause, start) | |
| source(noun, support, action, person, cause) | |
| base(noun, verb, organization, form, support) | |
| basis(noun, support, action, drop, part) | |
| cause(noun, support, action, person, cause) | |
| core(noun, support, action, place, quality) | |
| foundation(noun, organization, support, body, cause) | |
| motive(noun, cause, reason, idea, object) | |
| essence(noun, support, action, place, cause) | |
| heart(noun, support, action, place, part) | |
| germ(noun, quality, cause, character, spirit) | |
| footing(noun, organization, support, action, cause) | |
| antecedent(noun, support, action, cause, reason) | |
| infrastructure(noun, organization, support, action, cause) | |
| nucleus(noun, support, action, place, quality) | |
| reason(noun, support, action, cause, substance) | |
| seed(noun, fix, cause, establish, base) | |
| spring(noun, cause, start, top, point) | |
| center(noun, support, action, person, place) | |
| genesis(noun, cause, start, top, reason) |
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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> |