"Reproduces" is a verb that typically means the process of creating something again or making a copy of it. Its antonyms are "destroys," "eliminates," and "annihilates," which are actions that take away or completely eradicate the existence of something. "Ends" and "erases" are also antonyms for "reproduces," as they signify the removal or elimination of something from existence. Another antonym is "prevents," which means to stop something from happening or being created in the first place. All these antonyms essentially do the opposite of what "reproduces" does, which is to create or bring something into existence again.