Most super-eminent refers to the highest level of excellence or superiority. Antonyms for this term can be inferior, average, mediocre, common, substandard, or unexceptional. Inferior denotes something of lower quality or rank, while average refers to something that is neither outstanding nor poor. Mediocre implies a lack of distinction and excellence, while common describes something that is ordinary or widespread. Substandard is the opposite of superior or excellent, while unexceptional suggests that something is not extraordinary or remarkable. In conclusion, the antonyms of most super-eminent are words that signify a lack of quality or distinction.