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English definition of “deteriorate”

deteriorate

verb [I]     /dɪˈtɪə.ri.ə.reɪt/ US  /-ˈtɪr.i-/
C1 to become worse: She was taken into hospital last week when her condition suddenly deteriorated. The political situation in the region has deteriorated rapidly.Deteriorating and making worse deterioration     /dɪˌtɪə.ri.əˈreɪ.ʃən/ US  /-ˌtɪr.i-/ noun [C or U] We've seen a deterioration in relations between the countries.Deteriorating and making worse
(Definition of deteriorate verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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