There are several synonyms for the phrase "wiping the slate clean," which essentially refers to starting over again with a clean slate or a fresh start. A popular synonym for this phrase is "starting from scratch," which means to begin something anew without any prior progress or history. Another synonym is "erasing the past," which implies a clean break from previous events or mistakes. "Turning over a new leaf" is also commonly used to describe a fresh start, particularly when it comes to changing behaviors or habits. Other related phrases include "forgiving and forgetting," "starting afresh," and "slate wiped blank." Ultimately, the phrase is all about embracing a new beginning and moving forward.