Used to describe a condition affecting one's overall energy, not just physical strength. After the surgery, she experienced a period of debility and fatigue.
Pro Tip 2/3
Not Permanent
Often implies a temporary state; the person may recover strength later. The athlete's debility after the injury was thankfully short-lived.
Pro Tip 3/3
Emotional Impact
Can also refer to emotional or mental fatigue, not just physical. Chronic stress led to a debility that affected her work.