The phrase "at a future time" refers to an event or occurrence that will happen at some point in time beyond the present moment. However, there are several synonyms that can be used to express the same idea. Some of these include "eventually," "down the road," "in due time," "in the long run," "sometime later," and "at a later date." These synonyms can be used interchangeably depending on the context of the situation. For instance, "eventually" may suggest a longer time frame while "in due time" implies a more specific time period. Regardless of the synonym used, the important idea is that the event will occur at a time beyond the present moment.