signed and sealed

Officially approved or verified; successfully executed or completed. Once the contract is signed and sealed, we'll send an engineer to the house to set up the new satellite dish. The deal between the two companies has been signed and sealed.

COMMON If an agreement is signed and sealed or signed, sealed, and delivered, it is official and cannot be changed. Although a peace agreement has been signed and sealed, many villagers say they're afraid to return to their homes. A government spokesman said the bill must be signed, sealed and delivered by tomorrow. Note: In the past, documents were `sealed' with wax into which a special mark or design was pressed using a device called a seal. The mark or design in the wax proved that the document was authentic and had not been opened.