Main entry: fallacious
Definition: based on an incorrect or misleading notion or information
Usage: fallacious hope
Main entry: deceitful, fallacious, fraudulent
Definition: intended to deceive
Usage: deceitful advertising; fallacious testimony; smooth, shining, and deceitful as thin ice - S.T.Coleridge; a fraudulent scheme to escape paying taxes
Main entry: unsound, fallacious
Definition: containing or based on a fallacy
Usage: fallacious reasoning; an unsound argument