Definition - What does Sue mean?
To sue is to file a lawsuit against a party in order to try to bring that party to justice.
Once a lawsuit has been filed against a person, they have the ability to defend their case in a court of law. If the defendant defends their case successfully, then they will not have to pay any damages, or experience any punishments.
Justipedia explains Sue
The term "sue" is usually used in reference to civil lawsuits. The term that is used for criminal proceedings, when the government attempts to prove the guilt of accused criminals, is called "prosecute."
Typically, people sue other people when they believe that another person has committed a civil wrong, or a tort, against them. When they sue, they are usually looking for damages, or financial compensation, for having suffered a loss at the hands of the defendant.