Etymology

undupable

U1N1D2U1P3A1B3L1E1

Today it means: Incapable of being duped. Full definition →

English dupable ← French duper ← Middle French duppe
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The story

  1. Proto-Indo-European*né
  2. Proto-Indo-European*n̥-
  3. Proto-Germanic*un-
  4. Proto-West Germanic*un-
  5. Old Englishun-
  6. Middle Englishun-
  7. Englishun-
  8. Latinupupa
  9. Vulgar Latinūppa
  10. Old Frenchhuppe
  11. Middle Frenchduppe
  12. Frenchduper
  13. Englishdupe
  14. Englishdupable
  15. English todayundupable

From un- + dupable.

Etymology from Wiktionary, CC BY-SA 4.0.