Meaning of fallacious

fal•la•cious

Pronunciation: (fu-lā'shus), [key]
— adj.
  1. containing a fallacy; logically unsound: fallacious arguments.
  2. deceptive; misleading: fallacious testimony.
  3. disappointing; delusive: a fallacious peace.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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