Webster’s Revised Unabridged Dictionary · 1913
Calumniate
Ca·lum′ni·ate (kȧ·lŭm′nĭ·āt), v. i. [imp. & p. p. Calumniated; p. pr. & vb. n. calumniating.] [L. calumniatus, p. p. of calumniari. See Calumny, and cf. Challenge, v. t.] To accuse falsely and maliciously of a crime or offense, or of something disreputable; to slander; to libel.
Hatred unto the truth did always falsely report and calumniate all godly men's doings. Strype.
Syn. — To asperse; slander; defame; vilify; traduce; belie; bespatter; blacken; libel. See Asperse.
Ca·lum′ni·ate, v. i. To propagate evil reports with a design to injure the reputation of another; to make purposely false charges of some offense or crime.