Bas relief is a type of sculpture wherein the image or design is raised slightly from the background. However, if we delve into its antonyms, we find terms like high relief and alto-relievo, both of which refer to sculpture wherein the design or image is raised prominently from the background. In contrast, low relief is another term that is often used as an antonym for bas relief, wherein the design or image is carved into the surface and has only a slight projection from the background. Other antonyms for bas relief are sunken relief, incised relief, intaglio, and engraving, all of which denote various techniques of sculpture and engraving that differ significantly from bas relief.