A multipurpose accelerator is a versatile tool that can be used for various functions. If you're looking for synonyms for this term, you might consider words like "versatile accelerator," "all-purpose accelerator," or "multi-functional accelerator." Other options could include "multi-use accelerator," "flexible accelerator," or "adaptable accelerator." Depending on the context in which you need to use the term, you might find other options that better suit your needs. However, the overarching idea is that a multipurpose accelerator is a tool that can help you accomplish many different goals or tasks, and any synonym you choose should convey that sense of versatility and flexibility.