Enervating
Enervating refers to something that causes a feeling of extreme tiredness or exhaustion. It implies a draining of one's physical or mental energy. The term originates from the Latin word "enervare," meaning to weaken or unnerve. When an activity or situation is described as enervating, it suggests that it depletes the subject's vitality, leaving them feeling listless, weak, and lacking in vigor. This can manifest as a lack of motivation, difficulty concentrating, or a general sense of fatigue. Enervating experiences can be prolonged, such as a demanding job or a chronic illness, or they can be more acute, like a particularly strenuous physical activity or a deeply stressful event. The effect of being enervated is a reduction in the capacity to engage in activity or to feel enthusiastic about life. It's a state where energy reserves have been significantly depleted.