Crookspeak, also known as ARGOT, is a type of language used by criminals and other people who want to keep their conversations private. It is a coded language that uses words and phrases that are not commonly used in everyday speech. It is often used to disguise the true meaning of a conversation or to make it difficult for outsiders to understand. Crookspeak is also used to create a sense of camaraderie among criminals, as it allows them to communicate without fear of being understood by law enforcement.