Etymology

sororal

so·ror·al
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Today it means: Of, pertaining to, or characteristic of a sister or sisters; sisterlike, sisterly. Full definition →

First used mid 17th c.Proto-Indo-European *h₂élisder.? ← Latin soror ← Proto-Italic *swezōr
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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. Proto-Indo-European*h₂el-
  9. Proto-Indo-European*h₂élisder.?
  10. English todaysororal

From Latin soror (“sister”) + English -al (adjectival suffix).

First known use, by meaning

  • from mid 17th c. Related through a sister.

Etymology from Wiktionary, CC BY-SA 4.0.