The article systematizes and analyzes the stylistic terminology presented in scientific studies, works on language culture, stylistics, and translation studies by representatives of the Kharkiv Philological School of the 20s-30s of the 20th century. Cross-cutting theoretical and practical issues related to the development of the terminological tools of Ukrainian linguistic stylistics during the period of its formation as a separate branch of linguistics are traced. The relevant stylistic categories relied on by researchers of the language and style of Ukrainian classical writers, the language of science and journalism are noted: modern literary language, living language, folk language, sense of language, linguistic taste, peculiarities of the Ukrainian language, scientific language, artistic language, language of the press, literary norm, literary form, verbal formulas, linguistic phenomenon, specific meaning, context, synonyms, construction not characteristic of the Ukrainian language, uzus. Emphasis is placed on the fact that in the works of M. Sumtsov, O. Kurylo, O. Sinyavskyi, M. Hladkyi, M. Sulima, M. Johansen, S. Smerechynskyi, L. Bulakhovskyi, B. Tkachenko, O. Finkel, the terms and facts of the language in the broad context of other languages, with the involvement of foreign language counterparts. Underscored the advantage of studying stylistic means in practical terms as an additional characteristic of lexical, phraseological, grammatical phenomena, as a means of diversification, development of general literary norms. The characteristic features of this period are noted: 1) the instability of terminology, 2) the presence of variants in the terminological system of stylistics, 3) the consistent use of the lexemes language and language in term compounds. Substantial achievements of scientists were the justification of stylistics as a separate educational discipline, the definition of the main concepts of stylistics, the systematization of linguistic phenomena according to separate functional styles and according to the carriers of the corresponding linguistic properties; formulation of practical advice on the use of lexical groups, phraseological units, grammatical forms; analysis of idiosyncratic features of Ukrainian literary classics. The study of a specific terminological system in diachrony outlines the trends in the development of linguistic terminology in general.