The article attempts to explain the features of the phenomenon of Euroscepticism typical for the countries of Central and Eastern Europe (Visegrad group -Poland, Czech Republic, Slovakia, Hungary) based on linguistic methods of research. This approach is due to the close relationship of ethno-cultural and value elements that manifest themselves ambiguously in the international field and are expressed mainly through language. System-typological concept of the language of the outstanding linguist, philosopher, culturologist and Cybernetics, G. P. Melnikov, who developed the ideas of V. von Humboldt, A.A. Potebna, I.A. Baudouin de Courtenay proposes to allocate the main characteristic or the main feature of the language (determinant) , depending on how the communication function. Such a determinant, that is, the leading grammatical trend in the linguistic consciousness of the Indo-European peoples is the presentation of any plan according to the scheme of the developing event. This form is most developed in the Slavic languages, as the language technique that helps to preserve the inflection depends on the size of the language group, its homogeneity and the length of the information transmission chains, which provided the experience of settled agricultural Slavic peoples inhabiting the plains of Europe.
The change in the ethno-cultural landscape associated with the influx of migrants meant recognition of the need to find new strategies in relation to migrants and the resulting cultural, linguistic and religious heterogeneity of the population. At the same time, it exacerbated the confrontation between the "supranational structure" - "national state", the EU – member States, showing disappointment in mutual expectations. The phenomenon of euroscepticism, formed in the countries of the "Visegrad group", often defined as populism and known by statements of politicians and precedent texts broadcasted through the media, should be considered in connection with the system of values developed by the centuries-old way, and fixed oral and written tradition in the languages of these countries.
The protagonists of euroscepticism under the pressure of the population declare the protection of morality, religion, traditional family and criticize same-sex marriage, sex education, liberal interpretation of reproductive rights and quotas for refugees, positioning themselves as an alternative to the liberal project. Based on the systematic approach, which states that the properties of the element included in the structure can be understood only on the basis of its links with other elements of this structure, the authors conclude that the Visegrad four countries represent a mild version of euroscepticism. According to the authors, the most complete reflection of the socio-cultural reality in the consciousness of a native speaker, which can be traced both on the actual grammatical material, and taking into account external factors, provides system linguistics, the main directions of which were outlined by V. von Humboldt. In Russian linguistics this direction is represented by the works of G. P. Melnikov, whose scientific school is developed by a number of research centers, as well as his students and followers in the RUDN, where G. P. Melnikov taught and wrote the main works.