The proper spelling of the phrase "press suit with" is /prɛs sut wɪð/. The word "press" indicates the need for the suit to be ironed or steamed, while "suit" refers to a set of matching clothing. "With" indicates that the suit should be paired with something else, such as a tie or dress shoes. Ensuring correct spelling is important in communicating clearly, avoiding confusion and errors, and demonstrating attention to detail.