- Definitions|1
- Thesaurus|348
- Abbreviations|0
| intellect | |
| introduction(noun, start, beginning, opening, origin) | |
| mandrake | |
| marrow(cause, source, origin) | |
| maternity(cause, foundation, basis) | |
| mind | |
| naissance(start, origin) | |
| nascence(noun, birth) | |
| nascency(noun, birth) | |
| nativity(noun, beginning, origin, birth, dawn) | |
| nib | |
| nub(cause, source, origin) | |
| nursery(noun, beginning, origin, birth, dawn) | |
| onset(cause, start, rise, foundation, basis) | |
| oral sex(expression, idiom) | |
| originating point(expression, idiom) | |
| origination(cause, foundation, basis, origin, birth) | |
| outset(start, rise, origin, birth, genesis) | |
| parsnip | |
| person |
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| APA | Smart Define. (2015). fountainhead thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/fountainhead/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "fountainhead thesaurus" https://smartdefine.org/fountainhead/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, fountainhead thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/fountainhead/thesaurus/synonyms>. |
| MLA | Smart Define. "fountainhead thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/fountainhead/thesaurus/synonyms> |