The word "ex-crete" refers to the process of eliminating waste products from the body. Some antonyms for this term include "absorb," "retain," and "store." These words suggest the opposite action to ex-cretion, which involves taking in or holding onto materials rather than releasing them. Other possible antonyms might include "consume," "ingest," or "incorporate," all of which imply the intake or assimilation of substances rather than their expulsion. By considering these contrasting terms, we can better understand the complex processes that occur within the body, and appreciate the many ways in which living organisms interact with their environments.