The antonyms for the word "flushes out" are "clogs," "blocks," "obstructs," and "restricts." While "flushes out" means to drive something out or to eliminate it, these antonyms instead suggest the opposite action, where something is stopped, impeded, or hindered. The word "clogs" implies a physical blockage, while "obstructs" and "restricts" suggest a hindrance or limitation of movement, flow, or function. It is important to understand these antonyms, as they can help to clarify the meanings of words and improve communication. By understanding the opposite of "flushes out," we can appreciate its full range of uses and better express ourselves when describing actions and processes.