Which word means to speed up a process?

The definition of the term that means to speed up a process is best captured by "expedite." When something is expedited, it means that steps are taken to ensure that it happens more quickly or efficiently than it otherwise would. This term is commonly used in business and logistics contexts where timely completion is crucial.

While "accelerate," "facilitate," and "hasten" also convey similar notions of increasing speed or making processes faster, each has its own nuances. "Accelerate" often refers to increasing the speed of an ongoing process but doesn’t necessarily imply any specific action taken to improve efficiency. "Facilitate" focuses more on making a process easier or smoother rather than explicitly speeding it up. "Hasten" implies urgency and a desire to act quickly but may not involve systematic steps taken to ensure a faster outcome. Thus, "expedite" is the most precise word for the specific intent of speeding up a process through deliberate action.