The antonyms for the word "de-composed" include fresh, whole, solid, intact, complete, and undecomposed. The term "de-composed" is commonly used to describe the process of breaking down organic matter. The opposite of this process would be the preservation or maintenance of the original state of the object. For instance, fresh fruit is not yet decomposed, and a whole cake is not decomposed. In the context of a corpse or dead animal, the antonym for decomposed would be the body in its original, whole state. The antonyms of "de-composed" are essential in helping to describe the characteristics of objects or organisms.