noun, noun or participle which takes 'suru'
weaken and decline; deteriorate
Describes a gradual loss of strength, vitality, or function, often used for physical or mental decline. Somewhat formal or literary.
高齢になると体力が衰耗する。
As one ages, physical strength weakens and declines.
長い闘病生活で気
His mental energy deteriorated after a long illness.