Webster’s Revised Unabridged Dictionary · 1913
Slanderous
Slan′der·ous (·ŭs), 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.