When making an argument, it's important to acknowledge opposing viewpoints and address any potential flaws in your own argument. One common phrase used for this purpose is "granting all this," which means that even if you agree with some aspect of the opposing viewpoint, you still have a point to make. Some synonyms for "granting all this" include "while it may be true that," "admittedly," "granted," or "even so." These phrases signal to the listener or reader that you are aware of the counterargument, but you are continuing to make your own case. Using these synonyms can show that you are open-minded and thoughtful in your approach to debate.