The article deals with the means of speech expression as representatives of the idiostyle specifics of the American playwright Arthur Miller. The main aim of the study is to consider Arthur Miller's idiostyle as a multilevel structured system of constant means and forms of linguistic expression actualized in the process of creating a new literary space following the aesthetic preferences and pragmatic intentions of the author. The methodology grounds of the research including method of

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... al generalization, method of analysis and synthesis, stylistic analysis, lexico-semantic analysis, structural-semantic analysis, contextual interpretation method, descriptive method, pragmatic analysis. It has been revealed that the speech-expressive level of Arthur Miller's idiostyle system is presented by a variety of stylistically marked means of lexical, figurative, and syntactic sublevels, which converge in specific combinations, act as a tool for the embodiment of literary conception, and define pronounced expressive and emotional coloring of the playwright's texts. Main findings have also made it possible to conclude about the symbiosis of elements of the intellectual, psychological, and routine as the distinctive features of the writer's idiostyle.