Fatigue

Fatigue is a state of being without energy for a prolonged period of time. Fatigue is used in two contexts: in the medical sense, and in the sense of normal tiredness.

psychological phenomenon, emotional and mental exhaustion

condition characterized by emotional and physical exhaustion leading to a diminished ability to empathize or feel compassion for others, sometimes described as the negative cost of caring or referred to as secondary traumatic stress

human tiredness as a major safety hazard, often considered an internal precondition for unsafe acts

feeling experienced by many people who are required to remember an excessive number of passwords as part of their daily routine

deteriorating quality of decisions made by an individual after a long session of decision making