fallacious (
http://definr.com/fallacious)
adj 1: containing or based on a fallacy; "fallacious reasoning";
"an unsound argument" [syn:
unsound]
2: intended to deceive; "deceitful advertising"; "fallacious
testimony"; "smooth, shining, and deceitful as thin ice" -
S.T.Coleridge; "a fraudulent scheme to escape paying
taxes" [syn:
deceitful,
fraudulent]
3: based on an incorrect or misleading notion or information;
"fallacious hope"