Etymology

presumptuous

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Today it means: Making unwarranted presumptions or assumptions, often out of arrogance or excessive self-confidence, and thus exceeding appropriate or rightful limits. Full definition →

Middle English presumptuous ← Old French presumpcieus, presumptieus, presumptuos ← Medieval Latin praesūmptuōsus
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The story

  1. Medieval Latin · derived frompraesūmptuōsus
  2. Old French · derived frompresumpcieus, presumptieus, presumptuos
  3. Middle English · inherited frompresumptuous
  4. English todaypresumptuous

From Middle English presumptuous, borrowed from Old French presumpcieus, presumptieus, presumptuos and its etymon Medieval Latin praesūmptuōsus.

Etymology from Wiktionary, CC BY-SA 4.0.