This edition contains more than six thousand words and concepts that existed before and exist in the underworld today. The dictionary introduces the reader to the origin of slang words and expressions.Thieves' "suits" in the criminal palette of Russia are so diverse that there is simply no complete description of these specializations and, accordingly, the language of their communication in any reference book on criminology. In addition, according to experts, such diversity is not observed in any country in the world. Since the 19th century, researchers have been trying to compile such a list, to describe the specifics of the concepts and meanings of the "thieves' word".This dictionary will allow you to more clearly see and trace the past and present of the underworld, its place, role and significance for society , its principles of coexistence with public state power.The author is a person who knows this topic firsthand. He went from a thief to a writer-journalist, having spent many years in prison.The dictionary is intended for a wide range of readers interested in various aspects of the life of our society, and can also be useful to various specialists: lawyers, lawyers, law enforcement officers, sociologists, historians, psychologists, linguists and writers.