slander, slanderer

Definition:

To slander means to say negative, defaming things about another person.

Slander may be a true report or a false accusation, but its effect is to cause others to think negatively of the person being slandered.
Some of the words translated as "slander" mean: "speak against" or "spread an evil report" or "defame."
A slanderer is also called an "informer" or a "tale-bearer."