There are plenty of synonyms for the word "quicker" that you can use in your writing to add variety and interest. Some of the most common synonyms for "quicker" include faster, swifter, rapid, speedy, brisk, immediate, expeditious, accelerated, and hasty. Each of these words has a slightly different meaning and connotation, so it's important to choose the one that best fits the context of your sentence or paragraph. For example, you might use "swift" when describing the movements of a cheetah, or "hasty" to describe a rushed decision. Whatever synonym you choose, just be sure to use it consistently throughout your writing to avoid confusion or repetition.