The article analyzes the features of the epistolary style. The research focuses upon the usage of composite simple and incomplete sentences as well as upon the systematization of their structural and stylistic features. The work casts light upon the stylistic interpretation of composite sentences. The emphasis is made on the definit-personal, indefinite-personal, impersonal and nominative sentences, which are used in letters of B.Lepkyi. Particular attention is paid to nominative sentences, which bring to epistolary text great emotional stress. As they are usually used to express mental states of human emotion, and are used to fix the impressions from the described pictures, and from sudden cursory perceptions, as well as reactions to certain events and developments. In the article there have been investigated the infinitive sentence of journalistic, official business and other non biletristic styles that emphasize modal shades such as resolute statement, appeal, forcing, categorical statements, inevitability, etc. Epistolary speech as well as conversational, academic and other is heterogeneous by its meaning and by grammatical structure: as it is organized according to individual komunikatyve-stylistic features. The epistolary topics depends on the reasons that motivate a particular conception, depend of time, circumstances, spheres of usage and interest. The epistolary heritage of Ukrainian masters of fiction is valuable because the texts of their letters preserrve the linguistic lines of communicative and socio-cultural situations that is to say simultaneously both the communicant-informant the living carr- ier of language and the master of language are presented. The purpose of this article is achieved in the process of description of the features of the epistolary speech in the letters of Bohdan Lepky.