Very long is a phrase that describes something that has an elongated size or duration. However, there are several synonyms for the phrase that can be used to offer more specific descriptions. For instance, words like lengthy, extended, prolonged, and protracted all refer to something lasting for an extended period. Meanwhile, elongated, stretched out, and lengthened are terms that usually describe physical dimensions. Additionally, words like interminable, never-ending, and perpetual can describe something that seems to go on forever. By using more specific synonyms for the phrase, you can paint a more nuanced picture of something that is very long.