The antonym for "up scale" is "downscale." This term refers to something that is of lower quality or intended for a less affluent market. For example, a "downscale" restaurant may offer less expensive food with a more casual atmosphere, while an "upscale" restaurant may offer more expensive food with a more elegant atmosphere. Similarly, a "downscale" hotel may offer fewer amenities, while an "upscale" hotel may offer more luxurious accommodations. In general, the term "downscale" implies a lower level of quality or prestige, while "upscale" implies a higher level of quality or prestige.