Slander is a type of defamation.
Defamation, sometimes called "defamation of character", is spoken or written words that falsely and negatively reflect on a living person's reputation.
If a person or the news media says or writes something about you that is understood to lower your reputation, or that keeps people from associating with you, defamation has occurred. Slander and libel are two forms of defamation.
Establishing the truth is the single most effective defense that can be offered. If the remark is truthful and it "hurts", is embarrassing, or subjects you to ridicule, there is little you can do. Unfortunately, unless the remark is false, you have no recourse.