The Russian word suka "сука" (literally, " bitch ") has a stronger negative connotation than its English equivalent. In Russian criminal argot , it specifically refers to a person from the criminal world who had cooperated with law enforcement or the government , or "went bitch" ("ссучился" "ssuchilsya" ). Within the Russian prison system, there was a historical and social structure that had existed since the Tsarist Russian era. One of the important tenets of the system was that members would not serve or collaborate with the Tsarist and later Soviet government. This rule encompassed any kind of collaboration, not only "snitching" or "ratting."