Etymology

fallacy

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Today it means: Deceptive or false appearance; that which misleads the eye or the mind. Full definition →

Middle English fallaci ← Old French fallace ← Latin fallācia
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The story

  1. Latin · derived fromfallācia“deception, deceit”
  2. Old French · derived fromfallace
  3. Middle English · inherited fromfallaci
  4. English todayfallacy

From Middle English fallaci, fallace, fallas, from Old French fallace (whence -acy), from Latin fallācia (“deception, deceit”), from fallāx (“deceptive, deceitful”), from fallere (“to deceive”).

Words from the same roots

Latinfallācia all →

Etymology from Wiktionary, CC BY-SA 4.0.