slip‧page /ˈslɪpɪdʒ/ noun [uncountable and countable] formal
[Word Family: noun: slip, slipper, slippage, slipperiness; verb: slip; adjective: slippery]

1. failure to do something at the planned time, at the planned cost etc:
Slippage on any job will entail slippage on the overall project.

2. when something becomes worse or lower
slippage in/of
slippage in sales

3. when something slips:
snow slippage

[TahlilGaran] Dictionary of Contemporary English ▲