Guilt (law)state of being legally responsible for the commission of an offense / From Wikipedia, the free encyclopedia In criminal law, a person is guilty if a court has decided they have done something illegal. If a person has broken a law by stealing, for example, they are guilty of a crime. A person is guilty if a court says they are. The court has blamed them for doing something wrong. A guilty person is punished. The punishment is called the sentence. This short article can be made longer. You can help Wikipedia by adding to it.