Etymology

effectiveness

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Today it means: The property of being effective, of achieving results. Full definition →

English effective ← French effectif ← Latin effectīvu
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The story

  1. Proto-Indo-European*h₁éǵʰ
  2. Proto-Indo-European*h₁éǵʰs
  3. Proto-Italic*eks
  4. Latinex
  5. Latinex-
  6. Proto-Indo-European*dʰeh₁-
  7. Proto-Indo-European*dʰeh₁k-
  8. Proto-Indo-European*dʰh₁kyéti
  9. Proto-Italic*θakjō
  10. Proto-Italic*fakjō
  11. Latinfaciō
  12. Latinefficiō
  13. Latineffectīvu
  14. Frencheffectif
  15. Englisheffective
  16. English todayeffectiveness

From effective + -ness.

Etymology from Wiktionary, CC BY-SA 4.0.