Aim of the article is the analysis of epithets in the poetic idiostyle of A. Tolstoy, the Russian poet of the 19 century. Methodology. The article deals with identifying the lexical-semantic originality and functioning of adjectives-epithets in the poet's lyrical discourse. Context analysis is the primary research method based on the semantic method. Results. Based on the results of the study, the author makes a conclusion about the variety of thematic groups of adjectives-epithets and the peculiarities of their semantics, their formation based on the direct and figurative lexical meanings of various adjective categories. Additional meanings, evaluative and connotative components in the meaning of epithets, individual-author epithets, their syntagmatics are revealed. All this emphasizes the originality of the author's picture of the world, the poetic consciousness of A. Tolstoy. Reserch implications. The analysis of epithets in Tolstoy's works allows a new way of looking at his poetry's semantic versatility and shows richness, diversity, and originality of his poetic language.