141 entries under origin topic. ×
| essential(noun, support, action, base, beginning) | |
| essentiality(cause, base, ground) | |
| explanation(noun, support, action, reason, base) | |
| footing(noun, support, action, cause, start) | |
| fundamental(noun, adjective, law, support, regulation) | |
| heart(noun, support, action, cause, start) | |
| house(noun, place, spot, base, post) | |
| inducement(noun, cause, influence, reason, base) | |
| infrastructure(noun, support, action, cause, start) | |
| instigation(noun, start, reason, matter, opening) | |
| launch(cause, start, beginning, derivation) | |
| marrow(cause, idea, base, standard, essence) | |
| motivation(noun, reason, matter, agent, root) | |
| nub(cause, idea, standard, essence) | |
| opener(cause, top, opening, creation) | |
| ovule(noun, cause, beginning, stone, nut) | |
| ovum(noun, cause, beginning, stone, nut) | |
| pith(cause, idea, base, standard, essence) | |
| quick | |
| quintessence(cause, base, ground) |
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| APA | Smart Define. (2015). source thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/source/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "source thesaurus" https://smartdefine.org/source/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, source thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/source/thesaurus/synonyms>. |
| MLA | Smart Define. "source thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/source/thesaurus/synonyms> |