Etymology

allergy

al·ler·gy
A1L1L1E1R1G2Y4

Today it means: A disorder of the immune system causing adverse reactions to substances (allergens) not harmful to most and marked by the body's production of histamines and associated with atopy, anaphylaxis, and asthma; any condition of hypersensitivity to a substance. Full definition →

German Allergie ← Ancient Greek ἔργον (érgon) ← Proto-Hellenic *wérgon
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The story

  1. Proto-Indo-European*h₂el-
  2. Proto-Indo-European*h₂élyos
  3. Proto-Hellenic*ál͏̌l͏̌os
  4. Ancient Greekᾰ̓́λλος (ắllos)
  5. Proto-Indo-European*werǵ-
  6. Proto-Indo-European*wérǵom
  7. Proto-Hellenic*wérgon
  8. Ancient Greekἔργον (érgon)
  9. GermanAllergie
  10. English todayallergy

Borrowed from German Allergie. Coined by Austrian pediatrician Clemens von Pirquet in 1906 from Ancient Greek ἄλλος (állos, “other”) + ἔργον (érgon, “work, activity”), on the model of Energie.

Words from the same roots

Ancient Greekἄλλος all →

allosaurusallochthonousallochlorophyllallocrineallodoxaphobiaallopatryallophylicalloscutumallostasisallotrope

Etymology from Wiktionary, CC BY-SA 4.0.