"Making a mint" is a phrase used to describe making a large amount of money. There are plenty of synonyms that can be used to replace this phrase, such as "making a fortune," "raking in the cash," "rolling in dough," "hitting the jackpot," "striking gold," or "bringing home the bacon." Each of these phrases can be used to emphasize the idea of becoming wealthy or successful, and can be tailored to suit your specific situation. Whether you're talking about a new job opportunity, a recent investment, or some other form of financial gain, there are plenty of ways to describe the feeling of "making a mint".