The phrase "stays together" implies unity, harmony, and solidarity. Hence, its antonyms would denote division, disharmony, and fragmentation. Some antonyms for "stays together" could be "falls apart," "disintegrates," "separates," "scatters," "dissolves," "ruptures," "breaks down," "collapses," or "disperses." These antonyms imply a lack of connection, cooperation, and trust among individuals or groups. They denote chaos, instability, and conflict that can lead to the deterioration of relationships, families, communities, or organizations. Therefore, it is crucial to foster a culture of collaboration, empathy, and communication to ensure that individuals and groups can indeed "stay together.