- Definitions|2
- Thesaurus|312
- Abbreviations|0
| ingress(cause, source, derivation) | |
| initiation(cause, source, derivation) | |
| initiator | |
| inspiration(cause, influence, source, derivation, ancestry) | |
| institutor | |
| introduction(cause, source, derivation) | |
| inventor | |
| kindred | |
| launch(cause, source, derivation) | |
| line | |
| lineage | |
| mabap | |
| mainspring(cause, connection, source, derivation, ancestry) | |
| materfamilias | |
| motive(cause, source, derivation) | |
| nativity(cause, source, derivation) | |
| occasion(cause, source, derivation) | |
| old-fashioned | |
| old lady | |
| old man |
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| APA | Smart Define. (2016). progenitor thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/progenitor/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "progenitor thesaurus" https://smartdefine.org/progenitor/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, progenitor thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/progenitor/thesaurus/synonyms>. |
| MLA | Smart Define. "progenitor thesaurus" 29 February 2016. Web. 23 September 2026. <https://smartdefine.org/progenitor/thesaurus/synonyms> |