"Excurved" is a term that refers to something that is curved outward or bent in a convex shape. Some synonyms for this term include "convex," "bulging," "swollen," and "outwardly curved." Other possible synonyms for excurved might include "arched," "curving outward," "rounded," or "protruding." Depending on the context of the sentence or paragraph in which this term is being used, there may be other similar or related words that could serve as synonyms for excurved as well. Ultimately, the choice of synonym will depend on the specific meaning and tone that the writer is trying to convey in their text.