The article analyzes the linguistic picture of the world of Hutsuls in the segment of the dialectal lexeme wuiko through the prism of the Ukrainian fictionlanguage. The author of the article in the methodology of the study of the world language picture proceeds from the position that the modeling of the world's linguistic picture by lexical means is carried out primarily in the lexical-semantic structure of words. Information about the world is structured by lexical meanings by discretization of knowledge, their objectification and interpretation. When it comes to the linguistic picture of the world of a particular ethnographic group, it is necessary to take into account that its linguistic picture of the world is formed and manifested in the linguistic units, the overwhelming part of which coincides with the normative standard of the literary language, while the other part is characterized by differences that are characteristic only of the corresponding dialect or else the adjacent dialects that do not have a national distribution range. Dialect words perform special functions of nominating such realities of extra-ordinary reality, which in the language to which this dialect belongs does not have one-word nominative means. In the Ukrainian belletristic language, lexical dialectism wuiko (uncle) functions in the Hutsul dialect as a multi-valued construction, in which the segment of the linguistic picture of the world is embodied, defined by the different lexical meanings of the word, in particular: 1) “the mother or father's brother”; 2) “aunt’s husband”; 3) “adult or senior man in general”; 4) “bear”; 5) fig. “awkward, clumsy man”. Dialecticism wuiko (uncle) also reveals a certain derivational activity, which also indicates its significance in the formation of the linguistic picture of the world of Hutsuls. Ukrainian belletristic texts model Hutsul's linguistic picture of the world in the segment of dialecticism wuiko (uncle) more abundantly than the Hutsul dialect dictionaries, which do not capture the lexical-semantic variants of ‘aunt's husband’ and ‘awkward, clumsy man’.