The phrase "much same" is often used to describe things that are very similar or virtually identical. However, when we look for antonyms for this phrase, we find many words that convey different meanings. Some antonyms include diverse, distinct, dissimilar, varied, different, and disparate. These words suggest differences in quality, appearance, or nature. On the other hand, if we consider an antonym for "much same" that implies complete opposite, then we can use words like contradictory, incompatible, antithetical, and opposing. Such words highlight the contrast in ideas or opinions, as opposed to the similarity that "much same" indicates.