The phrase "most cusped" refers to something that has a lot of points or sharp edges. Some synonyms for this phrase include "most spiky," "most jagged," "most pointed," "most serrated," and "most prickly." These words can be used to describe natural formations like mountains or rocks, or man-made objects like a crown or a fence. The "cusped" shape is often associated with Gothic architecture and can be seen in the pointed arches of buildings or the intricate details of stained glass windows. Overall, the use of synonyms adds variety and depth to writing, allowing for more vivid and descriptive language.