The word "alives" does not exist, as the correct form is "alive." However, some antonyms for "alive" can be used to describe the opposite of being alive. These antonyms include "dead," "lifeless," "nonexistent," and "extinct." "Dead" refers to a state of no longer being alive, while "lifeless" describes something devoid of life or energy. "Nonexistent" means something does not exist or is not present, and "extinct" indicates that a living species no longer exists in the world. These words emphasize the lack of life or living presence, which can have significant implications in various contexts such as science, philosophy, and literature.