- Definitions|1
- Thesaurus|348
- Abbreviations|0
77 entries under origin topic. ×
| outset(start, rise, birth, genesis) | |
| pith(cause, source) | |
| quick(cause, source, stem) | |
| quintessence(cause, source) | |
| radicle(cause, quick, source, stem) | |
| radix(cause, quick, source, stem) | |
| reason(cause, source) | |
| rhizome(cause, quick, source, stem) | |
| seat(cause, quick, source, stem) | |
| soul(cause, source) | |
| stem(cause, quick, source) | |
| stuff(cause, source) | |
| substance(cause, source) | |
| substratum(cause, quick, source, stem) | |
| tuber(cause, quick, source, stem) | |
| ultimate cause(noun, expression, beginning, birth) | |
| underpinning(cause, quick, source, stem) |
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| APA | Smart Define. (2015). fountainhead thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/fountainhead/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "fountainhead thesaurus" https://smartdefine.org/fountainhead/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, fountainhead thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/fountainhead/thesaurus/synonyms>. |
| MLA | Smart Define. "fountainhead thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/fountainhead/thesaurus/synonyms> |