Most fragmented refers to something that is broken into small and disconnected pieces. The antonyms for this term could include united, consolidated, cohesive, integrated, and whole. These words imply that something is complete and has a sense of unity or wholeness, rather than being scattered or disjointed. When we use these antonyms, we are describing something that is organized, well-structured, and harmonious. It may be a group of people that work well together, a system or organization that is efficient and effective, or a physical object that is functional and complete. Using these antonyms, we can paint a picture of something that is in order, rather than being disorganized or fragmented.