Relating to or characteristic of a gens, clan, or lineage, especially regarding ancestry, family membership, or clan identity.
From Latin gentilis plus the suffix -ial, creating an adjective meaning 'of or pertaining to a gens or family lineage.'
In ancient Rome, gentilitial rights determined everything—whether you could marry outside your social class, inherit property, or hold political office—making ancestry literally a constitutional document written into your name.
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