1. An event that has been officially verified, scheduled, and will definitely take place
The concert is a confirmed event and tickets are now on sale.
O concerto é um evento confirmado e os ingressos já estão à venda.
2. An appointment or gathering that has received final approval and confirmation from all parties
The meeting next Monday is a confirmed event; everyone has RSVP'd.
A reunião de segunda-feira é um evento confirmado; todos confirmaram presença.