Etymology

acting

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Today it means: Temporarily assuming the duties or authority of another person when they are unable to do their job. Full definition →

English act ← Middle English acte ← Old French act
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The story

  1. Proto-Indo-European*h₂eǵ-
  2. Proto-Indo-European*h₂éǵeti
  3. Proto-Italic*agō
  4. Latinagō
  5. Latināctus
  6. Latinācta
  7. Old Frenchact
  8. Middle Englishacte
  9. Englishact
  10. English todayacting

From act + -ing.

Etymology from Wiktionary, CC BY-SA 4.0.