Intaglioing refers to the process of printing from a plate with an engraved or sunken design. Some possible synonyms for intaglioing include engraving, etching, drypoint, mezzotint, and aquatint. Engraving involves cutting lines directly into the plate with a sharp tool. Etching involves using acid to create grooves in the plate. Drypoint involves scratching lines into the plate with a needle. Mezzotint involves roughening the entire surface of the plate to create variations in tone. Aquatint involves etching a plate with acid and then applying a powdered resin to create fine textures. Each of these methods has its own unique characteristics and can produce beautiful, intricate prints.