The antonyms for the word "un-veil" include words such as conceal, cover, hide, mask, and bury. To conceal something means to keep it hidden or secret. Cover implies a physical obstruction that prevents something from being seen or revealed. To hide means to deliberately keep something out of sight, while mask suggests the act of camouflaging or disguising something. Finally, bury means to place something deep in the ground or hide it in a location that is difficult to locate. These antonyms demonstrate how the opposite of revealing or unveiling can be accomplished through various means of concealment, hiding, or covering up.