Depreciation

[Rihanna]

The act of lessening, or seeking to lessen, price,
value, or reputation.

[Kai]

(v.) The act of depreciating, is lowering the [value] of an [asset] with a calculable value. This mostly refers to the value for old items falling as the [demand] for them wanes.

[Dave Paprocki]

A reduction in the value of an asset over time, due in particular to wear and tear.

[Renato]

Depreciation is an accounting method of allocating the cost of a tangible asset over its useful life and is used to account for declines in value over time.

[Vania]

The state of being depreciated; disparagement.