The Basis of the Adoption of Borrowed Letters in the Kazakh Alphabet.

It is known that the words with the letters "f" and "x" used in the Kazakh language originated from Arabic and Persian and are found in European words that entered through the Russian language. Of the article is to discuss the basics of translating the letters "f" and "x" into the Kazakh alphabet. The use of religious and European words in normative dictionaries, with the letters "f" and "x" and entered into the language through the Russian language, is analysed on the basis of the methods of linguistics and statistical analysis. The specifics of these letters in religious discourse and their use in onomastics will be determined. The reasons for the inclusion of the letters "f" and "x" in the improved new alphabet are mentioned. Investigating how the Kazakh language adopts and modifies foreign sounds can contribute to a broader understanding of linguistic adaptation. The proposed research paper can be used in the analysis of the problem of assimilation of borrowed words.