👉 Infatigable is a phrase that describes someone who is extremely tired or exhausted, often due to prolonged periods of physical and mental exertion. It's often used when describing people who have worked long hours or been under pressure for extended periods. Infatigability can be defined as the inability to maintain focus or concentration for an extended period, particularly in work settings where there is a high level of stress or urgency. This term implies that someone may feel exhausted and unable to perform their tasks