Ernest Hemingway strives to address the "new woman" in the post-war world through his novel "The Sun Also Rises." As Jake and his friends wander through life as the lost generation, they face individual and group struggles with their promiscuous friend Brett, also known as Lady Ashley. Through Brett, Hemingway portrays a theme of anti-feminism and emasculation through the way Brett appears, behaves, and the relationship he has with Jake in particular along with other male characters. Furthermore, there is an element of insecurity between the central male characters which produces an atmosphere of competition, rivalry and mutual harassment. With this as a basis, Brett's ways only fuel tensions between the male characters and in the process leads to their emasculation through each individual's pursuit of Brett. The first character is Cohn, he is a determined writer and after writing his first novel, he has a feeling of conquest and determination. Hemingway opens with an illustrated view of Cohn to show a clear example of a dominant male figure who has a lot of insecurity. Hemingway describes how Cohn vented his anger and aggression through boxing, a very speckled form of aggression and power. Hemingway emphasizes the tensions of competition and jealousies to demonstrate how uncertain his male characters are about themselves and each other. The sense of insecurity shared among many of the book's central male characters suggests a redefinition of masculinity after the First World War, and Brett exemplifies these traits exhibited by each man. Brett's true character and intentions are truly shown in Hemingway's illustration of Brett's actions. Brett's emasculation of the men around her is on full display throughout the novel. She is first introduced... middle of the paper... here alone." (107) Despite Jake's frustrations with Brett, he is still feeble-minded and runs back to Brett where he finds comfort. In the Jake Brett's mind can do no wrong, even though Jake and the other male characters in the novel are blinded by Brett's true intentions. Overall Hemingway is committed to addressing the idea of ​​the "New Woman" as an example of his lifestyle choices. The post-war woman displays traits of promiscuity and pays less attention to the emotions of the men around her who desire their attention. Brett is no longer interested in love, but has instead turned her attention to live a life full of freedom and spontaneity, no man can tame this idea of ​​“New Woman” because she does what she wants without recognizing the repercussions that will follow from her actions.