The term "up town" generally refers to an affluent and upscale part of a city, but there are several antonyms to this phrase. One possible antonym could be "down town," referring to the central and more crowded parts of the city. Another opposite term could be "low income," which describes a less affluent and deprived area of the city. "Industrial" or "working-class" could also be considered as antonyms, indicating an area of the city heavily reliant on manual labor and industry rather than luxury or commerce. Alternatively, "rural" or "suburban" could be used to describe areas outside of the city center, which lack the prestige and prosperity associated with "up town.