endogamic

/ˌɛndoʊˈɡæmɪk/
adjective
  1. Relating to the practice of marrying or having relationships within one's own social group, tribe, or community.
    • Endogamic practices can reduce genetic diversity in a population.
    • Some royal families historically followed endogamic rules to keep power within the bloodline.
    • The tribe's endogamic traditions helped preserve their cultural identity.
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