slippage
noun [ C, usually singular or U ]
uk/ˈslɪpɪdʒ/ usa reduction in the level or amount of something:
Every slippage on the stock exchange brought fear and wild accusations.
a slippage in sth Exports will offset the slippage in domestic demand.
There has been a greater slippage in labour standards in the North than in the South.
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
timetable/schedule slippage
FINANCE
the difference between an expected result and the real result:
A slippage of about £3 billion will be announced by the Treasury this week.
margin/revenue slippage The $2 million is not enough to make up for the expected revenue slippage.