Slippage (noun)

1. The act or an instance of slipping or sliding, especially on a surface.
2. A loss of traction or grip.
3. A gradual or unexpected reduction in standards, quality, or performance.
4. A reduction in value, price, or rate.

Origin:

Late 19th century: from slip + -age.

Examples:

1. The slippage on the ice caused several accidents.
2. The slippage of his grip made him fall.
3. The slippage in quality control was unacceptable.
4. The slippage in sales was a cause for concern.
5. The slippage in the currency's value was due to economic instability.