The word "revelation" is commonly defined as the act of revealing or disclosing something that was previously unknown or secret. Some antonyms that could be used for this word include concealment, hiding, suppression, and masking. Concealment refers to the act of hiding something from view, while hiding means keeping something secret or out of sight. Suppression means preventing something from being expressed or made public, while masking means disguising or concealing one thing as another. These antonyms highlight the opposite meaning of revelation and show that there are multiple ways to describe concealment, secrecy, and misinformation.