deterioration
🇺🇸
/dɪˌtɪriəˈreɪʃn/
🇬🇧
/dɪˌtɪəriəˈreɪʃn/
the process of getting worse over time
The building showed clear signs of deterioration after years of neglect.
这栋建筑在多年失修后显示出明显的恶化迹象。