SLIPPAGE
slippage
(noun) failing to hold or slipping out of place; “the knots allowed no slippage”
slippage
(noun) a decrease of transmitted power in a mechanical system caused by slipping
slippage
(noun) decline from a standard level of performance or achievement
Source: WordNet® 3.1
Etymology
Noun
slippage (countable and uncountable, plural slippages)
The act of slipping, especially from a secure location.
The amount by which something has slipped.
A lessening of performance or achievement.
A decrease in motion, or in the power of a mechanical system due to slipping.
The difference between estimated and actual transaction costs.
Source: Wiktionary
Slip"page, n.
Definition: The act of slipping; also, the amount of slipping.
Source: Webster’s Unabridged Dictionary 1913 Edition