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