The term "more sundered" refers to something that is further or more greatly separated or divided. The antonyms for this phrase would, therefore, include words that suggest unity, cohesion, or connection. Some possible antonyms for "more sundered" might include terms such as connected, united, fused, integrated or melded. These words all suggest a state of being together or joined, rather than separate or divided. By contrasting the term "more sundered" with its antonyms, we can illustrate the importance of unity and collaboration, and highlight the ways in which working together can lead to greater success and progress.