noun
feeling of exhaustion; lethargy; lassitude
A sense of physical or mental weariness, often with a lack of motivation or energy. Common in medical, psychological, and everyday contexts.
仕事が終わると、いつも脱力感に襲われる。
After work, I'm always overcome by a feeling of exhaustion.
彼は病気
He felt lethargic for a while after his illness.