1. The swift or expedited finishing of a task, project, or obligation with explicit confirmation or acknowledgment
The project was marked for express completion by the end of the week.
O projeto foi marcado para conclusão expressa até o final da semana.
2. In legal or contractual contexts, the formal and explicit fulfillment of all obligations or requirements
Express completion of all deliverables is required before final payment.
A conclusão expressa de todas as entregas é necessária antes do pagamento final.