The antonyms for the word "most dichotomous" are pretty straightforward. Dichotomous means divided into two parts or halves, while its antonyms would mean the opposite. Some possible antonyms for dichotomous are united, connected, integrated, merged, blended and combined. These words imply the idea of two things coming together to form a coherent whole, rather than being separate or divided. Other antonyms could include homogeneous, uniform, consistent, consistent, or monolithic. Depending on the context in which "most dichotomous" is used, some of these antonyms may be more appropriate than others. Regardless, they all convey the idea of oneness and unity rather than separation and division.