There are several synonyms for the phrase "more stamping." Some of the common alternatives include additional stamping, further stamping, increased stamping, and extra stamping. Other words that can be used include extended stamping, augmented stamping, and amplified stamping. Regardless of the words used, the meaning remains the same. More stamping simply refers to the physical act of placing a stamp on a document, envelope, or package to indicate postage paid or to demonstrate authenticity. This is a common practice in mailing and is necessary for ensuring that delivery is made to the correct address.