The word "unveiling" is often used to describe the act of revealing or making something known. However, there are several antonyms for this word that describe the opposite action. One common antonym is "concealing," which means to hide or keep something secret. Another opposite of unveiling is "covering up," which suggests that something is being disguised or obscured. A third antonym is "withholding," which means to hold back or keep something from being revealed. These antonyms serve as a reminder that not everything needs to be revealed or made public, and sometimes it's better to keep things hidden or private.