A disclosure is a secret once it has been told, or the act of telling it. A paper may print a disclosure about a public person. A company may have to make a disclosure about its money. In law and business it is a serious, formal word: you “make a disclosure.” Though actually, people also stretch it to mean any news that was being kept quiet. It is heavier than gossip. Disclosure often has a duty behind it, as if someone had to tell, or as if the telling itself is the news. The quieter everyday words are just “telling” or “revealing.”