1. to postpone or delay something that was expected to conclude or terminate
The company decided to defer the end of the fiscal year audit until next quarter.
A empresa decidiu adiar o fim da auditoria do exercício fiscal até o próximo trimestre.
2. to put off the conclusion or termination of an event, process, or agreement
They agreed to defer the end of their contract negotiations.
Eles concordaram em adiar o fim das negociações do contrato.