deterioration

US /dɪˌtɪr.i.əˈreɪ.ʃən/
UK /dɪˌtɪr.i.əˈreɪ.ʃən/
1.

劣化

the process of becoming progressively worse.

:
•
a deterioration in the condition of the patient
:
worseningdeclinedecaycollapsefailurefalldropdownturnslumpslipslidestagnationwaningebbretrogressiondegradationdegenerationbreakdowndecompositionrotputrefactionspoliationperishingwitheringatrophyweakeningfadingbreakupdisintegrationdilapidationcrumblingcorruption
:
improvement
:
deteriorate