When it comes to synonyms for the phrase "leaves middle", several options are available depending on the context. For example, if we are talking about a group of people who have decided to quit something, instead of using the phrase "leaves middle," we can use the word "resigns." Another synonym could be "exits." If we are talking about a person who has left a city or a building without indicating where they are going, synonyms for "leaves middle" could be "disappears" or "vanishes." Additionally, if we are discussing a particular point in time, we can use the phrase "passes through the middle".