衰竭
shuāi jié · HSK 7
exhaustion
🪫 衰 decline + 竭 used-up = the body declines until totally used up: organ failure
衰 means decline or weaken (as in 衰老, aging); 竭 means exhausted or drained dry (as in 竭尽全力, give it your all). Together they name the point where a system declines until it runs completely empty — medical collapse or organ failure.