A false statement maliciously made to injure another's reputation.(noun)
The utterance of maliciously false statements; slander.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "calumny" in a sentence
"Well, yes, you can request the candidate, to Write a short note on the word calumny above, or ask From what is it derived?"
"It was the word calumny that offended him most, that, and the idea that he, the Marquis of Trowbridge, should be called upon to promise not to commit an offence!"
"Yet even calumny is sagacious enough to discover and to attack the most vulnerable part."