The word "emarginated" refers to something with a notched or serrated edge. When we want to describe something as more emarginated, we can use a number of synonyms that convey a similar sense of sharpness or roughness. For example, we might say that something is more jagged, more serrated, more notched, more toothed, more crenulated, or more angled. Each of these words conveys a sense of something being sharp or uneven, and can be particularly useful when describing geological formations, architectural details, or other structures with a distinct and irregular profile.