Etymology

sororate

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Today it means: The custom of the marriage of a man to the sister of his wife, usually after the wife has died. Full definition →

Latin soror ← Proto-Italic *swezōr ← Proto-Indo-European *swésōr
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The story

  1. Proto-Indo-European*swé
  2. Proto-Indo-European*h₁ésh₂r̥
  3. Proto-Indo-European*su-h₁ésh₂-ōr?
  4. Proto-Indo-European*swé
  5. Proto-Indo-European*swésōr
  6. Proto-Italic*swezōr
  7. Latinsoror
  8. English todaysororate

From Latin soror (“sister”) + English -ate (adjective-forming suffix).

Etymology from Wiktionary, CC BY-SA 4.0.