An attache case is a type of briefcase that is typically used for carrying important documents, laptops, and other items. There are many synonyms for this type of case, including diplomatic bag, portfolio, satchel, dispatch case, executive case, and lawyer's bag. Each of these terms refers to a similar type of bag, designed to be carried by professionals who need to transport important items from one location to another. These types of bags are often made of leather or other high-quality materials, and may have compartments to keep documents or electronics organized and easily accessible. Whatever you call it, an attache case is an essential tool for any professional on the go.