The book "Grammatical Observations on Some Articles of the Dictionary of Bad Language" by Guy-Marie Desplace is a research work devoted to the study and analysis of vocabulary that is considered erroneous or inappropriate in speech. In his book, the author examines in detail various statements, words and expressions that can be perceived as incorrect from the point of view of grammar or morality. The means of language studied in the book are valuable material for understanding the internal development of language, as well as its interaction with society. In addition, the book has great practical value for those interested in linguistic correctness and linguistic norms. "Grammatical Observations on Some Articles of the Dictionary of Bad Language" is an interesting resource for anyone who wants to be more careful about the use of language in everyday communication.