The phrase "going back and forth" refers to the act of moving repeatedly between two points or ideas. It is a common expression that is used to describe a variety of actions such as debating, arguing, or even pacing. However, sometimes using the same phrase over and over again can get dull. If you're looking for alternatives, some synonyms for "going back and forth" include oscillating, vacillating, wavering, switching, toggling, and alternating. These synonyms can be used in a wide range of contexts, from describing a person's behavior to explaining a technical process. By using different synonyms, you can spice up your writing and add more variety to your language.