Get on with one's half-life?, 5 letters
Progressive decline, 5 letters
The process of gradually becoming inferior, 5 letters
As of stored charge or current, 5 letters
The organic phenomenon of rotting, 5 letters
Progressively declined, 7 letters
Turned, and then some, 7 letters
Something that rots, 7 letters
Half-lives' measurements, 6 letters