The term "splash guard" is typically associated with auto parts and refers to a shield or barrier that helps prevent water and mud from splashing up onto the underside of a vehicle. However, there are many other synonyms for "splash guard" that can be used in different contexts. Some alternatives include: mud flaps, fender liners, splash shields, wheel well covers, and rocker panels. These terms are all related to protecting a vehicle from the elements, but they may be more specific to certain parts of the car or to different types of vehicles. Additionally, the phrase "splash guard" can also be used more broadly to refer to any type of protective barrier that helps prevent splashing or spilling.