The topic of this thesis is gallicisms in the Russian language and their adaptation to it. The aim of the paper is to show how gallicisms penetrated the Russian language and how they adapted to the rules of the Russian language. The first part briefly explains what loanwords are. Then the history of the relationship between France and Russia is presented, as well as the influence of French loanwords and the classification of gallicisms into individual lexical groups in the Russian language. The central part of the work is devoted to the adaptation of gallicisms, which takes place on several levels. The first level is phonetic adaptation, i.e. how gallicisms are adapted to the Russian phonetic system. There are also orthographic changes. The second level is morphological adaptation. Gallicisms are adapted to the norms of the Russian language and they receive categories such as neuter gender and declension, which are absent in the French language. The third and the last level of adaptation of gallicisms is semantic adaptation. Some gallicisms retain their original meaning, while the meaning of others is either expanded or narrowed. The analysis has shown the adaptation of selected loanwords of French origin, and it has been concluded that all gallicisms were adapted to the rules of the Russian language.