The phrase "are in touch" is commonly used to refer to people who communicate regularly or stay connected with each other. However, there are several synonyms that can be used to express the same meaning, such as "keep in contact," "stay in touch," "maintain correspondence," "remain connected," or simply "communicate frequently." These synonyms can be used interchangeably depending on the context and the level of formality required. The ability to effectively stay in touch with others is crucial in building and maintaining long-lasting relationships, be it personal or professional. Ultimately, having a strong communication network is key to a successful and fulfilling life.