Etymology

immunity

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Today it means: Protective resistance against disease. Full definition →

Middle English immunite ← Old French immunité ← Latin immūnitās
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The story

  1. Latin · derived fromimmūnitās
  2. Old French · derived fromimmunité
  3. Middle English · inherited fromimmunite
  4. English todayimmunity

From Middle English immunite, from Old French immunité, from Latin immūnitās, in the legal sense; for the medical use see immunization. Equivalent to immune + -ity. Displaced native Old English frēols (“privilege, immunity”).

Etymology from Wiktionary, CC BY-SA 4.0.