calumny

A false accusation or charge brought to tarnish another's reputation or standing.

He [Thomas Howard, 4th Duke of Norfolk] mentioned to her [Elizabeth I of England] the rumour, which was ſpread of his marriage with the Scotch Queen [Mary, Queen of Scots]; he complained of it as a groundleſs calumny; and diſclaimed all thoughts of that kind, with many expreſſions full of contempt, both for Mary's character, and dominions.

To publish all malicious calumnies against an individual with an intent to defame him, is a wrong on the part of the calumniator, and an injury to the individual, for which the law affords redress. To write or print these calumnies is such an aggravation of the crime, as to constitute an offense against the government, and the author of the libel is subject to the additional punishment which may be inflicted under an indictment.

Falsifications or misrepresentations intended to disparage or discredit another.

Accusations of abuse were pure extortive calumny in a malicious bid to make money.

Thus have I frielie, in reverence and love, schewit my opinion in this matter, and that privatlie to your self alone, to consider it mair deiplie, without bitternes or upbraiding calumnie to thame who sie and hes socht out this mater mair warelie, whose harts I trust ze sal find far from calumnie or seiking praise to them selfs by reproche of uthers,[…]

To make false accusations or levy false charges against a person with the intent to tarnish that person's reputation or standing; to calumniate.

His [Dominieus Dietrich's] memory has been basely calumnied by many German historians.

However, the Priests of the idols, not content with persecuting Christians, began to calumny them; the Philosophers, finding a Religion that preached humility unrewarding, joined their Priests. Ridicule and insults were showered […] on the new Sect from all sides.