Decline

n.
  1. A falling off; a tendency to a worse state; diminution or decay; deterioration; also, the period when a thing is tending toward extinction or a less perfect state; as, the decline of life; the decline of strength; the decline of virtue and religion.
  2. (Med.) That period of a disorder or paroxysm when the symptoms begin to abate in violence; as, the decline of a fever.
  3. A gradual sinking and wasting away of the physical faculties; any wasting disease, esp. pulmonary consumption; as, to die of a decline.