discloser

Discloser is a noun referring to a person or entity that reveals information that was previously private or confidential. It is most often used in formal or legal contexts to label the party that provides information, contrasted with the recipient or receiving party.

In contract law and nondisclosure agreements, the discloser is the party that discloses confidential information to another party. The discloser typically retains ownership of the disclosed material, and the recipient is bound to use it only for permitted purposes and to keep it confidential. The term is commonly paired with the “receiving party” or “non-disclosing party” in such documents.

Beyond contracts, discloser can describe anyone who reveals information to others, such as a journalist, researcher, or whistleblower. In journalism, a discloser might be a source who provides information under anonymity. In clinical or regulatory contexts, clinicians, organizations, or investigators may be described as disclosers when releasing information to patients, authorities, or the public.

Usage notes: discloser is relatively formal and most often appears in written, legal, or procedural language. In everyday speech, people may say “the person who disclosed” or simply “the source,” depending on the context. The term emphasizes the act of disclosure and the role of the information provider within a given exchange.