sealed
Definitions
Fastened or closed securely to prevent access, leakage, or contamination.
Decided or settled in a way that is final and irreversible.
Marked with an official stamp or emblem to verify authenticity or confidentiality.
Examples
The envelope was carefully sealed with wax before being sent.
The fate of the kingdom was sealed the moment the king signed the treaty.
Make sure the container is tightly sealed to keep the food fresh.