This thesis is set out to approach the generica specifica of the American family novel in its post-millennial context. With the focus on Jonathan Franzen?s 'Freedom' (2010), the investigation adopts the conception of entropy to the effect that the members of the Berglund family are read as thermodynamic systems in both the context of American culture and the framework of a precarious web of family relations. The characteristics which result from such a reading aim to contribute to an evaluation of the American family novel in its manifestation after Postmodernism; more specifically, they operate to class Franzen?s novel with the paradigm that Vermeulen and van den Akker refer to as "Metamodernism."Conceptualized by physicists such as Rudolf Clausius and Hermann von Helmholtz in the nineteenth century, the idea of entropy is concerned with the irreversibility of energy after it has been transformed from one form into another and, in its more recent makeup, connotes ideas of instability, anomaly and disorder. Part One of this thesis analyzes the father, mother and son of the Berglunds with regard to macroscopic and socio-cultural phenomena, constructing them as "symbols of entropy" which are closely related to American myths. Part Two, then, examines the dynamics of entropy as they affect the microscopic and intra-familial realm, where they oscillate between the destructive and a more (re)constructive force of entropy and thus reconfigure Franzen's nuclear family. Through the metaphorical use of entropy, the analysis shows that the recent American family novel is drawing on traditional elements (e.g., narrativity and characterization) while translating them into a metamodern structure of feeling which is characterized by the symbolic import of the family as a pragmatic ideal and a site for the production of affect.