It's a psychological phenomenon ... can't be defined ... define the mind? But anyway...
Hypermasculinity is a cultural construct characterized by an exaggerated adherence to traditional masculine traits and behaviors, often emphasizing aggression, dominance, emotional repression, and sexual prowess. It promotes the idea that to be a "real man," one must display strength, control, and toughness, often at the expense of emotional expression and vulnerability.
This concept can manifest in various ways, such as the glorification of violence, the denigration of femininity, and the pressure to conform to rigid gender roles. Hypermasculinity is often criticized for perpetuating harmful stereotypes and contributing to toxic behaviors, both in individuals and society at large. It can lead to negative outcomes, including violence, sexism, and difficulties in forming healthy relationships.