deterioration
deterioration — noun
1. a situation in which something becomes worse in quality, health, or condition, o
a situation in which something becomes worse in quality, health, or condition, often over a period of time
After the accident, doctors noticed a slow deterioration in Sana's eyesight.
slow deterioration — adjective + noun collocation
The gradual deterioration of Renata and Lan's friendship began with small misunderstandings.
deterioration of [relationship] — noun + of + noun pattern
Rain and wind caused the deterioration of the old wooden fence.
Dewi was worried by the rapid deterioration in the river's water quality.
Without regular practice, Cyrus noticed a clear deterioration in his guitar skills.
- decline
gradual loss of quality or strength; more neutral and broader in use than deterioration
- decay
suggests natural breakdown or rotting; more physical and biological in feel
- degradation
often implies damage caused by human activity, as in environmental degradation
- improvement
positive change in quality or condition
- recovery
return to a previous good state, especially after illness or damage
文法句型
deterioration + in + noun
deterioration + of + noun
用法筆記
Common in formal or written contexts such as medical reports, economic analysis, and environmental studies. In everyday conversation, 'getting worse' is usually preferred.