The word "un-zips" means to open or separate the two parts of a zipper. The antonyms for this word are "zips up" or "closes." These words mean the opposite of un-zips, which is to join the two parts of a zipper together. When we need to close our jacket or bag, we use these words. Another antonym for un-zips is "fastens," which means to secure something in place. When we fasten a zipper, we ensure that it remains closed and secure. These antonyms are important to understand the opposite meaning of the word "un-zips.