Abstract. This article studies the lexical-semantic properties of units expressing the mental state of a person in the Uzbek language. The semantic analysis of these units, their use in context and their role in the speech structure are studied. The methods of lexical-semantic analysis, component analysis, contextual analysis and comparison were used in the research. The results show that units expressing the mental state in the Uzbek language have their own semantic changes in different contexts, which play an important role in increasing the expressiveness of speech. The role of these units in modern speech and literary language is also considered.