Etymology

obnoxious

ob·noxi·ous
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Today it means: Extremely offensive or unpleasant; very annoying, contemptible, or odious. Full definition →

Latin obnoxiōsu ← Proto-Indo-European *h₃édosder.? ← Proto-Italic *op
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The story

  1. Proto-Indo-European*h₁ep-
  2. Proto-Indo-European*h₁éps
  3. Proto-Indo-European*h₁óp(i)
  4. Proto-Italic*op
  5. Latinob
  6. Latinob-
  7. Proto-Indo-European*neḱ-
  8. Latinnoxa
  9. Latinobnoxi(us)
  10. Proto-Indo-European*h₃ed-
  11. Proto-Indo-European*h₃édosder.?
  12. Latinobnoxiōsu
  13. English todayobnoxious

Learned borrowing from Latin obnoxiōsus.

Etymology from Wiktionary, CC BY-SA 4.0.