weakening; decline; emaciation
Refers to a loss of strength, vitality, or power, whether physical, mental, or abstract. Often used for aging, health, or the decline of institutions.
As you get older, you feel a decline in physical strength.
The country is facing an economic decline.
Lately I've been feeling my physical strength decline.
Even as he ages, he shows no signs of decline.
Exercise prevents the decline of muscle strength.
Lately, the decline in the company's performance has become noticeable.