Remember that the truth is always a defense for the person who allegedly commited slander. This means that if what they said has any truth to it ("Johnny is a gambler" and Johnny really is a gambler), then that person will likely prevail in a case such as this. You need to make 100% sure that was was said was untrue and in addition it caused damage to your reputation to even consider bringing a slander suit forth. Good luck.
By the way - there are a ton of issues in this area of law, so you need to find someone who deals with this to be sure that you are getting good representation.
"A type of defamation. Slander is an untruthful oral (spoken) statement about a person that harms the person's reputation or standing in the community. Because slander is a tort (a civil wrong), the injured person can bring a lawsuit against the person who made the false statement. If the statement is made via broadcast media -- for example, over the radio or on TV -- it is considered libel, rather than slander, because the statement has the potential to reach a very wide audience."
