The opposite of "most gutter" would be something that is high-class or elegant. It could be described as refined, polished, or sophisticated. Other antonyms for "most gutter" might include luxurious, deluxe, posh, or upper-class. These words all suggest a sense of wealth and privilege, as well as a certain degree of cultural refinement. To be the opposite of "most gutter," something would also need to be associated with good taste and aesthetic sensibility, rather than the roughness or coarseness that characterizes the gutter. Overall, the antonyms for "most gutter" convey a sense of affluence, refinement, and exclusivity that stands in stark contrast to the unsavory connotations of the word "gutter.