The Collaborative International Dictionary
Calumniate \Ca*lum"ni*ate\, 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.
Wiktionary
vb. (present participle of calumniate English)
Usage examples of "calumniating".
Among these we may distinguish the inexpiable guilt of calumniating a bishop, a presbyter, or even a deacon.
But the same spirit is equally prone to the base practice of insulting and calumniating a fallen enemy.
For though not regarding the cause of quarrel in the same light as Maltravers, and putting aside all question as to the right of the latter to constitute himself the champion of the betrothed, or the avenger of the dead, it seemed clear to the soldier that a man whose confidential letter had been garbled by another for the purpose of slandering his truth and calumniating his name, had no option but contempt, or the sole retribution (wretched though it be) which the customs of the higher class permit to those who live within its pale.
In that same month of November a satirical journal, charged with calumniating the President of the Republic, was sentenced to fine and imprisonment for a caricature depicting a shooting-gallery and Louis Bonaparte using the Constitution as a target.
What appointments to office have they detailed which had never been thought of, merely to found a text for their calumniating commentaries.