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. 稍有延误都有可能使工程无法按时完工。
a slight or slow steady fall in the amount, value, etc. of something （微弱或逐渐的）下降，降低，贬值 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。