Synonyms for the term "states-evidence" or "state's evidence" include turning witness, giving testimony, snitching, providing information, cooperating with authorities, blowing the whistle, and speaking out. These terms refer to the act of giving evidence against one's associates or accomplices in a criminal trial, often in exchange for immunity or a reduced sentence. The act of providing testimony against one's associates is often seen as a betrayal and can be risky, but it is sometimes necessary for the successful prosecution of serious crimes. While the term "states-evidence" is specific to the legal system in the United States, the concept of turning witness is universal in criminal justice systems around the world.