0 a reduction in the rate, amount, or standard of something: --
The party leader is said to be concerned at the slippage (= loss of popularity) in the recent opinion polls.
the slippage of the book's publication date
2 a failure to happen or finish on time: --
News of the delay in production was not surprising, and observers expect further slippage.
the slippage of the book's publication date
3 the difference between an expected result and the real result: --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
We kunnen het stap voor stap voltooien, hoe lang de weg ook is en het kan niet worden voltooid, hoe kort de weg ook is, als je niet eens je voetafdruk markeert.