1. perform at a higher level than would be expected based on your ability or resources
punch above your weight in a competition
The idiom 'to punch above your weight' means to try to do something that is considered above your abilities. "Fionn volunteered to head the team but we all think he is punching above his weight. He doesn't have any management experience." In a colloquial context, this phrase is often used to joke about romantic partners who are considered more successful, good looking or intelligent than the person they are dating. "That woman is too beautiful, I think you are punching above your weight Michael!"