This research examines the use of taboo language in the film Uncut Gems, focusing on identifying the types of taboo language and their functions. Using a descriptive qualitative approach, the study analyzes linguistic features within the film. The findings reveal four types of taboo language: vulgarity (69 occurrences, 61%), epithet (30 occurrences, 26%), obscenity (12 occurrences, 10%), and profanity (3 occurrences, 3%). Each type serves distinct functions in the narrative, including being provocative, showing contempt, drawing attention, and mocking authority. The most frequent function was provocation (65 occurrences, 61%), followed by showing contempt (23 occurrences, 21%), drawing attention (19 occurrences, 17%), and mocking authority (1 occurrence, 1%). Taboo language plays a crucial role in intensifying the film's emotional impact and enhancing the portrayal of complex social dynamics. This study contributes to understanding how language in film serves as a tool for narrative depth and audience engagement, offering insights into the interplay between language, story, and social context in cinema.