Most asunder means to be separated or divided into several pieces, parts, or factions. Some antonyms for this phrase could include "intact," "connected," "whole," "united," or "cohesive." These words imply that something is unified or not broken apart. For example, a group of individuals may be considered "united" if they share the same beliefs and values, or a physical object may be considered "intact" if it has not been broken or damaged in any way. Using antonyms for "most asunder" can help to paint a picture of something that is complete, cohesive, and unified rather than fragmented or in disarray.