1 failure to achieve an aim or complete a task by a particular date 延误；逾期: The smallest slippage could delay completion of the project. 略微的拖延就可能令工程不能按时完工。

2 a slight or gradual fall in the amount, value, etc of sth ﹙微弱或逐渐的﹚下降，降低: There has been some slippage of support for the government's policies. 对政府政策的支持已有所下降。