Etymology

contagious

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Today it means: Easily transmitted to others. Full definition →

Old French contagieus ← Late Latin contagiosus
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The story

  1. Late Latin · derived fromcontagiosus
  2. Old French · derived fromcontagieus
  3. English todaycontagious

From Old French contagieus, from Late Latin contagiosus, from contagio.

Etymology from Wiktionary, CC BY-SA 4.0.