Deterioration means the process of becoming worse or declining. It involves a gradual and negative change in something, such as a person's health, a building's condition, or the quality of something over time. Full definition
They contribute to muscle growth, slow down the processes of deterioration of muscle tissue and contribute to fat burn. (fitnessandpower.com)
We're watching out for further signs of deterioration in this data. (bullmarkets.co)
Although there are opportunities to turn things around, fears of further deterioration in the coming decades must not be taken lightly. (sciencedaily.com)