There are various synonyms for the phrase "be of one mind". It refers to an agreement or unity of thought among a group of individuals. Some common synonyms include being in agreement, being of the same mind, thinking alike, seeing eye to eye, being on the same wavelength, being united, having a common understanding, sharing a common perspective, being of common accord, and being in harmony. All of these phrases convey the sentiment that a group of people are in unison and have a mutual understanding or viewpoint on a particular matter. Being of one mind is essential for effective teamwork and collaboration, making these synonyms valuable in various settings, including the workplace, community groups, and social interactions.