s past due; not paid at the scheduled time
a. 过期的, 未兑的, 迟到的, 早就成熟的
[经] 过期未付的
1. The library book is overdue, so I need to return it today.
图书馆的书已经过期了，所以我今天需要归还它。
2. My rent payment is overdue, and I might face a late fee.
我的租金支付已经逾期了，我可能会面临滞纳金。
3. She received a notice that her subscription was overdue.
她收到了订阅过期的通知。