The antonyms for the word "more slumping" could be "rising," "ascending," "climbing," or "soaring." These words represent the opposite of slumping and imply an upward trend or increase. When something is slumping, it is typically losing value or declining. Therefore, to describe the opposite, we would use words that signify growth or improvement. For example, a company's stocks may be slumping, but with a strong IPO, they could begin to rise, ascend or soar. Using antonyms can help create vivid imagery and convey a clear message to the reader.