Breaking apart is a term used to indicate the separation of something into pieces or fragments. There are several synonyms that can be used in place of this phrase, depending on the context. For instance, one could use the term "disintegrating" to describe something that is falling apart or breaking down. Similarly, "dissolving" could be used to describe something that is breaking apart in a more fluid or chemical sense. Other synonyms that could be used include "crumbling," "shattering," "falling apart," and "splitting." No matter which word is used, they all convey a sense of separation and collapse, which makes them useful in a variety of contexts.