Etymology

adeptness

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Today it means: The quality of being adept. Full definition →

English adept ← French adepte ← Latin adeptu
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The story

  1. Proto-Indo-European*h₂éd
  2. Proto-Italic*ad
  3. Proto-Italic*ad-
  4. Latinad-
  5. Proto-Indo-European[Term?]
  6. Proto-Italic*apjō
  7. Latinapiō
  8. Latinapīscor
  9. Latinadipīscor
  10. Latinadeptu
  11. Frenchadepte
  12. Englishadept
  13. English todayadeptness

From adept + -ness.

Etymology from Wiktionary, CC BY-SA 4.0.