degenerate C2+

/dɪˈdʒɛnərət/ having declined from a former or normal state of moral or physical quality

degeneracy C2+

/dɪˈdʒɛnɚəsi/ the state of having declined morally, physically, or in quality

degeneration C2+

/dɪˌdʒɛnəˈreɪʃən/ the process of declining in quality or function