grace period
noun [ C ] uk/ˈɡreɪs ˌpɪə.ri.əd/ us/ˈɡreɪs ˌpɪr.i.əd/
（欠债还款的）延缓期，宽限期
extra time you are given to pay money you owe without losing something or paying an additional amount
You have a ten-day grace period in which to pay your insurance premium. 你有十天的宽限期支付保险费。