Etymology

undupe

U1N1D2U1P3E1

Today it means: To undeceive someone who has been duped. Full definition →

English dupe ← French duper ← Middle French duppe
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The story

  1. Proto-Indo-European*h₂ent-
  2. Proto-Indo-European*h₂énts
  3. Proto-Germanic*anda-
  4. Proto-West Germanic*anda-
  5. Old Englishand-
  6. Old Englishon-
  7. Middle Englishon-
  8. Englishun-
  9. Latinupupa
  10. Vulgar Latinūppa
  11. Old Frenchhuppe
  12. Middle Frenchduppe
  13. Frenchduper
  14. Englishdupe
  15. English todayundupe

From un- + dupe.

Etymology from Wiktionary, CC BY-SA 4.0.