Everything that this Dictionary tells you about is the world. The world on the other side of law and morality is a unique, complex, cruel world - the world of thieves. And - the world of the mafia - a cancerous tumor on the crime-sick body of humanity. Here they are presented side by side - the original villainy and the villainy of a highly organized, corrupt element. Before you is the first attempt to “collect stones” - from the origins in the historical aspect to show the development of language, and through it - the formation of customs, morals, traditions, methods of “activity” of thieves and mafiosi, so that, God forbid, if possible, to reason with some and warn others... The main consultant is a deputy of the Supreme Council of Ukraine, Chairman of the Supreme Council Commission on Combating Corruption and Organized Crime, Candidate of Legal Sciences, Associate Professor Colonel of the Security Service of Ukraine Omelchenko G.E. Consultant - member of the Writers' Union of Ukraine, candidate of legal sciences, associate professor, police colonel, former head of the Criminal Investigation Department of Ukraine Logvinenko I.M.