The word "nonanimal" refers to something that is not related to animals. Its antonyms, therefore, would be the words that describe things that are related to animals. Some common antonyms for nonanimal include terms like "animal," "beastly," "zoological," and "faunal." These words describe living creatures with fur, feathers, or scales that are frequently addressed in the context of biology, evolution, and the natural world. Other antonyms for nonanimal could be terms like "artificial," "inanimate," "man-made," and "synthetic," which describe things that are not alive or derived from living beings. Using antonyms can help in better understanding the meaning of a word and how it relates to other concepts.