This article discusses linguistic purism of totalitarian Soviet period. Linguistic purism is the practice of defining one variety of a language as being purer or intrinsically higher than other varieties. It attempts to purify a language from foreign words as well as lexical and grammatical elements of territorial and social dialects. In totalitarian states usually appeared a clear binary approach to everything, including language. In addition, totalitarianism as a political religion formed an official ritual language which did not allow any deviation from the standard. Thus under the totalitarian regime purism became an ideology protecting the legitimacy of a unified, elaborated official language and absoluteness of the norms.