"Turn a nice penny" is an idiom used to describe making a significant amount of money. However, there are numerous other synonyms for this phrase that can be employed to convey the same meaning. For example, one may say "rake in the cash," "make a killing," "hit the jackpot," "strike it rich," or "earn a bundle." These phrases are all commonly used in everyday language to describe making a considerable amount of money, particularly in a short amount of time. Whether you're talking about a business venture, investment opportunity, or job promotion, there are plenty of other ways to describe "turning a nice penny".