Slanderous \Slan"der*ous\, a. 1. Given or disposed to slander; uttering slander. ``Slanderous tongue.'' --Shak. 2. Embodying or containing slander; calumnious; as, slanderous words, speeches, or reports. -- {Slan"der*ous*ly}, adv. -- {Slan"der*ous*ness}, n.