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Synonyms
ancestor, father, forebear (also forbear), forebearer, forefather, grandfather, progenitor
Antonyms
descendant (also descendent)
1643, in the meaning defined above
Late Latin, from Latin primus + genitor begetter, from gignere to beget — more at kin
More from Merriam-Webster on primogenitor
Thesaurus: All synonyms and antonyms for primogenitor
See Definitions and Examples
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