The phrase "comes to nothing" is commonly used to express the idea that something has failed or resulted in disappointment. There are several synonyms that can be used to convey this same meaning, including "amounts to nothing," "falls short," "fizzles out," "ends in failure," "falls through," and "turns out fruitless." These expressions are useful when describing situations where expectations were high, but ultimately not met. They can be used in a variety of contexts, such as describing a failed business venture, an unsuccessful attempt at achieving a goal, or a disappointing outcome to a relationship. Overall, these synonyms help convey the notion that despite initial promise or hope, something ultimately did not succeed.