The phrase "any foursome" typically refers to a group of four people engaged in an activity together. However, there are several synonyms that can be used to describe a group of four in a more specific context. For example, in golf, a foursome is a group of four players playing together on the same team. In music, a quartet is a group of four musicians performing together. In literature, a tetralogy is a series of four related works. Other synonyms for a group of four include quad, quadruplet, and set of four. Ultimately, the synonym used will depend on the context and the specific meaning intended.