1. becoming progressively worse; declining in condition

1. becoming worse in quality, condition, or value
Usage: present participle of deteriorate

Examples

• The patient’s condition is deteriorating rapidly.
• The deteriorating building needs immediate repairs.
• Weather conditions are deteriorating as the storm approaches.
• His deteriorating health forced him to retire early.
• The company’s deteriorating finances led to layoffs.
• The deteriorating relationship between the countries caused concern.
• Air quality has been deteriorating in the city for years.