The antonyms for the word "more discoid" could be "less round," "angular," or "flat." When something is described as discoid, it means that it is round, flat, or circular in shape. However, if one wants to describe an object that is not round or circular, they could use one of the above antonyms. For example, a square object would be considered to be less round, and therefore an antonym for the term discoid. Similarly, an object with many sharp angles could be described as angular, which is also an antonym for the word "more discoid." Ultimately, antonyms for words are helpful in providing contrast and clarification for more precise and accurate communication.