"Zip it" is a common phrase that is used to tell someone to be quiet or to stop talking. However, there are several synonyms for this phrase that one can use to express the same sentiment. For instance, one can say "shut up," "be silent," "hold your tongue," "hush," "stop talking," "keep quiet," or "cease speaking." These phrases can be used interchangeably depending on the situation, the tone of the conversation, or the personalities involved. Whichever synonym one chooses to use, the meaning behind it is clear: it's time to stop talking and listen.