Etymology

great-great-grandson

Today it means: The son of one's great-grandchild. Full definition →

English grandson ← Middle English sone ← Old English sunu
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The story

  1. Englishgreat-
  2. Englishgrand-
  3. Proto-Indo-European*sew-?
  4. Proto-Indo-European*sewH-
  5. Proto-Indo-European*suHnús
  6. Proto-Germanic*sunuz
  7. Proto-West Germanic*sunu
  8. Old Englishsunu
  9. Middle Englishsone
  10. Englishson
  11. Englishgrandson
  12. English todaygreat-great-grandson

From great- + great- + grandson.

Etymology from Wiktionary, CC BY-SA 4.0.