'Slandering' in the Bible

But when the Jews saw the crowds, they were filled with jealousy and began contradicting the things said by Paul, and were slandering him.

But actually, I have written to you not to associate with any so-called [Christian] brother if he is sexually immoral or greedy, or is an idolater [devoted to anything that takes the place of God], or is a reviler [who insults or slanders or otherwise verbally abuses others], or is a drunkard or a swindler—you must not so much as eat with such a person.

And see to it that your conscience is entirely clear, so that every time you are slandered or falsely accused, those who attack or disparage your good behavior in Christ will be shamed [by their own words].