1. to delay or defer something with no fixed date for resumption or completion
The company decided to postpone indefinitely the launch of the new product due to market conditions.
A empresa decidiu adiar indefinidamente o lançamento do novo produto devido às condições de mercado.
2. to put off a planned event, decision, or action with no specific timeframe for when it will occur
They postponed indefinitely the wedding ceremony.
Eles adiaram indefinidamente a cerimônia de casamento.