fallacious   (Sound)

The adj fallacious has 3 senses

• fallacious, unsound -- (containing or based on a fallacy; "fallacious reasoning"; "an unsound argument")


• deceitful, fallacious, fraudulent -- (intended to deceive; "deceitful advertising"; "fallacious testimony"; "smooth, shining, and deceitful as thin ice" - S.T.Coleridge; "a fraudulent scheme to escape paying taxes")


• fallacious -- (based on an incorrect or misleading notion or information; "fallacious hope")