There are several synonyms for the phrase "be almost out" that can be used to express the same meaning. One is "run low," which is often used when referring to supplies such as food or fuel. Another option is "nearly depleted," which suggests that something has almost completely run out. "Almost empty" is also a suitable synonym, commonly used when referring to gas tanks or water bottles. "Running out" is a more general phrase that can be used for a variety of situations, while "scarcely available" is often used to describe items that are in short supply. Overall, there are plenty of synonyms that can be used to convey the idea of something being almost out or nearly depleted.