A synonym is a word or phrase that means the same as another word or phrase in the same language. “Reactively” is an adverb that means “in a way that responds to something that has already happened.” A synonym for “reactively” is “responsively.” For example, you could say “The company reacted quickly to the customer complaint” or “The company responded quickly to the customer complaint.”
Being able to use synonyms effectively is an important part of communication. It allows you to vary your language and avoid repetition, and it can also help you to be more precise in your expression. When you are writing or speaking, it is helpful to have a good understanding of the synonyms for the words you want to use. This will allow you to choose the most appropriate word for each situation.