decay

the process of gradually becoming inferior

a gradual decrease; as of stored charge or current

the organic phenomenon of rotting

an inferior state resulting from the process of decaying; "the corpse was in an advanced state of decay"; "the house had fallen into a serious state of decay and disrepair"

the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation

lose a stored charge, magnetic flux, or current; "the particles disintegrated during the nuclear fission process"

fall into decay or ruin; "The unoccupied house started to decay"

undergo decay or decomposition; "The body started to decay and needed to be cremated"