Command processing overhead time refers to the amount of time it takes for a computer to execute a command or task. In order to reduce this time, there are several synonyms that can be used to describe it. Some of the most commonly used synonyms for command processing overhead time include command response time, command execution time, and command processing time. Other synonyms may include task completion time, task execution time, and system processing time. Regardless of the specific term used, the goal is always to minimize the amount of time it takes a computer to complete tasks in order to optimize efficiency and performance.