backdate

backdate
verb
  1. [with obj.](一般作 be backdated)(Brit.)make (something, especially a pay increase) retrospectively valid
    (英)使有追溯效力(尤指加薪)
    the company have agreed a 5 per cent increase, backdated to January 1.
    公司同意加薪5%,追溯到1月1日有效。
    ■put an earlier date to (a document or agreement) than the actual one
    (在文件或协议上)写较早的日期
    they backdated the sale documents to evade a court order.
    他们在销售协议上写上较早的日期以逃避法院指令。
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