"Multifragmenting" is a term that refers to breaking something into many pieces or fragments. Some synonyms that can be used instead of this term include fragmentation, shattering, disintegrating, splintering, fracturing, breaking apart, and crumbling. These words all convey the idea of something being divided or shattered into smaller pieces. They can be applied to various contexts, such as describing the process of a rock breaking apart or the fragmentation of a society. Choosing the right synonym depends on the context and the tone that needs to be conveyed. Nonetheless, all these words can be a useful tool for writers who want to create more variety in their writing.