The word "extinctionism" refers to a belief or ideology that supports the idea of extinction, particularly when it comes to certain species. However, there are other terms that can be used instead of extinctionism to convey similar meanings. For instance, some may refer to it as "species nihilism" or "species pessimism." Alternatively, "biocatastrophism" could also be used to describe a perspective that is concerned with the decline or extinction of various forms of life on Earth. Other options include "ecosystem fatalism," "terminal biophilia," and "life-denialism." Each of these terms emphasizes a negative viewpoint about the future of life on Earth and the role that humans may or may not play in its preservation.