The phrase "most beneath" suggests something that is at the lowest point or bottom of something. The antonyms for this phrase could include "highest above," "topmost," "above all," "superior," "overarching," or "supreme." Each of these antonyms describes a position or quality that is superior or higher than the lowest point. For example, "supreme" suggests the highest authority or power, while "highest above" implies being at the top or pinnacle of something. By considering these antonyms, we can describe a range of positions or qualities that are opposite to the idea of being most beneath.