Confidential adoption refers to a type of adoption where the identity of the biological parents is kept confidential from the adoptive parents and the child. This type of adoption can also be referred to as closed adoption or anonymous adoption. Closed adoption is when the identity of the biological parent is not revealed to the adoptive parents and the child, while anonymous adoption is when the identity of the biological parent is not known at all. Other synonyms for confidential adoption include secret adoption, private adoption and sealed adoption. These terms are all related to the aspect of keeping the adoption information confidential and private.