A combative reaction can be replaced with a number of synonyms that would better communicate the intended message based on the context. For instance, instead of saying combative, you may use hostile, confrontational, belligerent, aggressive, or contentious. Each word describes a different tone of reaction and should be chosen based on the scenario. A combative reaction can also be referred to as a defensive response, retaliatory behavior, or even a counterattack in certain contexts. It's essential to understand the connotations each synonym carries to use them appropriately and avoid miscommunication. Ultimately, selecting the right word leads to better communication and helps convey the intended message efficiently.