This study explores the pragmatic dimension of T. S. Eliot’s modernist masterpiece, The Love Song of J. Alfred Prufrock, by focusing specifically on expressive speech acts. The research problem arises from the limited linguistic attention given to expressive acts in poetry compared to their extensive study in daily communication. The primary objectives are to identify, classify, and analyze these speech acts to reveal the protagonist’s internal psychological state. Adopting a qualitative descriptive method based on Searle’s taxonomy and Ronan’s classifications, the analysis examines selected poetic utterances within their modernist context. The results indicate that the speaker relies extensively on expressive acts, particularly those of lamenting and self-deploring, to communicate his inner fragmentation and paralysis. Ultimately, the study concludes that these linguistic choices effectively mirror the themes of anxiety and social alienation, proving that pragmatic analysis is a vital tool for decoding the emotional depth of literary characters.