Definition for FAL-LA'CIOUS

FAL-LA'CIOUS, a. [Fr. fallacieux; L. fallax, from fallo, to deceive. See Fail.]

  1. Deceptive; deceiving; deceitful; wearing a false appearance; misleading; producing error or mistake; sophistical; applied to things only; as, a fallacious argument or proposition; a fallacious appearance.
  2. Deceitful; false; not well founded; producing disappointment; mocking expectation; as, a fallacious hope.

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