"More downside-up" is an interesting term that refers to a situation or circumstance that has a greater likelihood of turning negative or having an adverse impact. Some synonyms for this phrase could include "deteriorating," "worsening," "regressing," "declining," or "devolving." Each of these words implies that things may be getting worse or moving in a negative direction. Alternatively, you could use phrases like "adding insult to injury," "exacerbating the problem," or "compounding the issue" to convey a sense of worsening conditions. Regardless of the language you choose, it is clear that "more downside-up" represents a difficult situation that may require careful navigation and problem-solving skills to resolve.