Variability of foreign language vocabulary as a universal property of the receiving system

The article is devoted to the study of the phenomenon of variation of foreign language vocabulary in modern Russian. The scientific problem lies in the need to rethink this linguistic phenomenon in the context of digital communication, where spontaneous spoken language becomes the main source of innovation, while traditional research is often limited to the analysis of normative vocabulary. The purpose of the work is a comprehensive analysis of the manifestations and mechanisms of variation based on the material of the live speech of users of social networks. To achieve this goal, a set of methods was used, including monitoring and recording oral speech in natural situations (podcasts, streams, audio messages), a continuous selection of examples from social networks (VK, Telegram, TikTok, Rutube) for the period 2023-2025, as well as contextual and distributional analysis to identify educational models and functions of options. As a result of the study, three main types of variation were identified and systematized: phonetic and graphic, morphological and semantic. It has been established that it is in the Internet environment that foreign language vocabulary maximizes its enriching potential, demonstrating deep assimilation through creative word-making. The practical significance of the work lies in the fact that its results can be used in compiling dictionaries of neologisms and in teaching Russian, as well as serve as a basis for further research on the dynamics of linguistic norms in the digital age. The prospects of the study are seen in tracking the long-term fate of the identified accidents and their possible transition to use.