1. A formal agreement or contract that has been officially authenticated or ratified, often marked with an official seal or signature to indicate its binding nature and legitimacy
The two countries signed a sealed agreement to establish trade relations.
Os dois países assinaram um acordo selado para estabelecer relações comerciais.
2. A confidential or legally binding arrangement that cannot be publicly disclosed without authorization
The settlement was a sealed agreement, so details could not be revealed to the press.
O acordo era um acordo selado, portanto os detalhes não podiam ser divulgados à imprensa.