DECAYED

To deteriorate, to get worse, to lose strength or health, to decline in quality.

Example: "The pair loved to take pictures in the decaying hospital on forty-third street."

(of organic material) to rot, to go bad.

Example: "The cat's body decayed rapidly."

(of an unstable atom) to change by undergoing fission, by emitting radiation, or by capturing or losing one or more electrons.

(of a quantum system) to undergo optical decay, that is, to relax to a less excited state, usually by emitting a photon or phonon.

Loss of airspeed due to drag.

To cause to rot or deteriorate.

Example: "The extreme humidity decayed the wooden sculptures in the museum's collection in a matter of years."