The crossword solution for the term 'imprint firmly' is 'ETCH'. To ETCH something means to carve or engrave a design, text, or pattern into a hard surface. It is a process that has been used for centuries to create art and decorative items. Etching is also used in the production of printed materials such as books, magazines, and newspapers. The process involves using an acid or other corrosive material to cut into the surface of the material, leaving an imprint that is permanent and difficult to remove.