When someone is coming back at you, it means they are answering a question or remark you have made, or perhaps they are retaliating to something you have said. Instead of using the same phrase repeatedly, there are multiple synonyms you can use. Some of the alternatives include "responding," "replying," "retaliating," "hitting back," "countering," "reacting," "getting back" or even "reciprocating." Using a variety of these synonyms can enhance the language you use in conversation or in writing and make your speech or content more engaging.