There are a variety of synonyms for the phrase "dinner dance." One option is "ballroom dinner," which generally refers to a formal event with music and dancing. "Banquet dance" is another synonym, which suggests a more lavish, celebratory affair. "Evening gala" can also be used interchangeably with "dinner dance," denoting an event with both a meal and dancing. Additionally, "soiree" is a French term often used to describe a social gathering or party. This term can also be applied to a dinner and dance event, particularly if it is an elegant affair. Ultimately, the synonym used will depend on the tone and formality of the event.