The term "more diversiform" means having a greater variety or diversity. Some antonyms for this term could include "less diverse," "uniform," "homogeneous," or "monotonous." These antonyms describe a lack of variation or difference, rather than an abundance of it. For example, a company with less diverse employees might be described as having a uniform workforce. Similarly, a landscape with mostly one type of tree or plant could be considered monotonous. Overall, antonyms for "more diversiform" describe a lack of variety or diversity, rather than emphasizing an abundance of it.