There are plenty of synonyms for the phrase "misses out" that express the idea of missing an opportunity or experience. For example, one might use phrases like "falls short," "loses out," "fails to take advantage of," or "passes up." Other synonyms could include "overlooks," "neglects," "omits," or "skips," all of which suggest a sense of regret or disappointment at having missed something important. Whether you're talking about a chance to attend a concert, a job opportunity, or a social gathering, there are plenty of ways to describe the feeling of having missed out on something exciting or meaningful.