Etymology

activatory

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Today it means: That acts as an activator. Full definition →

English activate ← Middle English actyf ← Old French actif
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The story

  1. Proto-Indo-European*h₂eǵ-
  2. Proto-Indo-European*h₂éǵeti
  3. Proto-Italic*agō
  4. Latinagō
  5. Ancient Greekἐνεργητικός (energētikós)
  6. Latināctīvu
  7. Old Frenchactif
  8. Middle Englishactyf
  9. Englishactive
  10. Englishactivate
  11. English todayactivatory

From activate + -ory.

Etymology from Wiktionary, CC BY-SA 4.0.