Etymology

authoritative

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Today it means: Arising or originating from a figure of authority. Full definition →

English authorit(y) ← Middle English auctorite ← Old French autorité
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The story

  1. Proto-Indo-European*h₂ewg-
  2. Proto-Indo-European*h₂owg-éye-ti
  3. Proto-Italic*augejō
  4. Proto-Italic*augeō
  5. Latinaugeō
  6. Latinauctor
  7. Latinauctōritā
  8. Old Frenchautorité
  9. Middle Englishauctorite
  10. Englishauthorit(y)
  11. English todayauthoritative

From authorit(y) + -ative.

Etymology from Wiktionary, CC BY-SA 4.0.