Etymology

antonymous

A1N1T1O1N1Y4M3O1U1S1

Today it means: Synonym of antonymic. Full definition →

Proto-Indo-European *h₃édosder.? ← English antonym
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The story

  1. Englishantonym
  2. Proto-Indo-European*h₃ed-
  3. Proto-Indo-European*h₃édosder.?
  4. English todayantonymous

From antonym + -ous.

Etymology from Wiktionary, CC BY-SA 4.0.