Fallacious \Fal*la"cious\, a. [L. fallaciosus, fr. fallacia: cf.
F. fallacieux. See {Fallacy}.]
Embodying or pertaining to a fallacy; illogical; fitted to
deceive; misleading; delusive; as, fallacious arguments or
reasoning. -- {Fal*la"cious*ly}, adv. -{Fal*la"cious*ness},
n.
[1913 Webster]