Aspersion
Part of speech: noun
Definition: An attack on somebody's reputation or good name, often in the phrase to cast aspersions upon…. A sprinkling of holy water.
Calumny
Part of speech: noun
Definition: a falsification or misrepresentation intended to disparage or discredit another.false charges brought about to tarnish another's reputation or standing.
Example sentence: The wounds of calumny, the reproaches of the proud, the venom of the bigoted, the treachery of the false, and the weakness of the true, we have known in our measure; and therein have had communion with our Lord Jesus.