This article analyzes the semantic, thematic and stylistic features of lexical Arabisms used in Alisher Navoi’s Sufi-biographical work “Nasoyim ul-muhabbat”. The study identifies the functions of Arabic borrowings in expressing religious and mystical concepts, moral and psychological qualities, symbolic color and light meanings, and bookish-scientific terminology. The findings demonstrate that Arabisms in the work operate not only as lexical borrowings but also as key linguistic means that reveal the ideological and aesthetic essence of the text, the Sufi worldview and the concept of the perfect human being. Descriptive, comparative, semantic and stylistic methods are used in the analysis.