The phrase "more orbicular" refers to something that is more circular or rounded. Antonyms for this phrase would include words such as "oblong," "oval," "elliptical," "rectangular," "square," or "angular." Depending on the context in which the phrase is used, different antonyms may be more appropriate. For example, in a discussion about shapes, the antonyms "rectangular" or "angular" would be more fitting, whereas in a discussion about facial features, the antonyms "oblong" or "oval" would be more relevant. Using antonyms can help to clarify the meaning of a phrase or word and provide greater precision in communication.