The phrase "punch below one's weight" is an antonym for the popular idiom "punch above one's weight". It means to perform or achieve below one's expected level of ability, talent or resources. It denotes a lack of confidence, underestimation of one's capabilities, or misguided judgments. It can be applied to various contexts, such as sports, business, relationships, academics, etc. Punching below one's weight implies settling for mediocrity, accepting defeat without trying, or succumbing to limitations. Hence, it is essential to recognize our potential, determine our goals and work towards achieving them. Punching above our weight requires effort, persistence, and resilience, but it is the only way to succeed and excel.