136 entries under source topic. ×
| end(noun, reason, matter, agent) | |
| crux(cause, heart, center, nucleus) | |
| early stage(noun, expression, cause, beginning) | |
| embarkation(noun, cause, beginning, opening) | |
| essence(cause, base, heart, foundation) | |
| essentiality(cause, base, ground) | |
| forging(noun, cause, beginning, derivation) | |
| git go(noun, expression, cause, beginning) | |
| ground(noun, law, regulation, cause, start) | |
| infrastructure(cause, base, foundation, basis) | |
| instigation(noun, start, reason, matter, opening) | |
| marrow(cause, base, ground) | |
| motivation(noun, reason, matter, agent) | |
| pith(body, cause, base, heart) | |
| quick(body, cause, heart, center) | |
| quintessence(cause, base, ground) | |
| seat(noun, cause) | |
| stuff(cause, base, ground) | |
| substance(body, cause, base, heart) | |
| underpinning(cause, base, foundation, basis) |
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| APA | Smart Define. (2015). origin thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/origin/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "origin thesaurus" https://smartdefine.org/origin/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, origin thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/origin/thesaurus/synonyms>. |
| MLA | Smart Define. "origin thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/origin/thesaurus/synonyms> |