Down the line is a phrase used to describe something that will happen in the future or a possible outcome of a situation. Some synonyms for this phrase include down the road, in time, eventually, ultimately, ultimately, in the long run, someday, and later on. These words indicate that something might take a while to happen, but they also suggest that it is inevitable. If you want to convey a sense of urgency, other synonyms that might be more appropriate include forthcoming, imminent, coming up, or in the near future. You can use these words interchangeably, depending on the context and the emphasis that you want to put on the idea of future events.