The present article investigates insulting expressions as one of the most significant manifestations of negative expressiveness in language. Insults are not merely offensive lexical items; they function as communicative instruments that express emotions, social attitudes, and interpersonal tension. The study explores the semantic, stylistic, and pragmatic characteristics of insulting discourse in English and Uzbek languages. Particular attention is paid to the role of expressive vocabulary, emotional evaluation, and contextual meaning in the formation of insulting speech. The research also examines how cultural values and social norms influence the use of insults in communication. The findings demonstrate that insulting expressions reflect both linguistic structures and the socio-cultural mentality of speakers.