Meaning of “deteriorate” in the English Dictionary

"deteriorate" in British English

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deteriorateverb [ I ]

uk /dɪˈtɪə.ri.ə.reɪt/ us /dɪˈtɪr.i.ə.reɪt/

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.

More examples

  • We could see his health deteriorating week by week.
  • Unfortunately the survey shows that children's health is deteriorating in many areas.
  • As the company's financial outlook deteriorated, several directors resigned.
  • My eyesight began to deteriorate quite rapidly.
  • We knew that, for the children's sake, we had to prevent our relationship from deteriorating any further.
deterioration
noun [ C or U ] uk /dɪˌtɪə.ri.əˈreɪ.ʃən/ us /dɪˌtɪr.i.əˈreɪ.ʃən/

We've seen a deterioration in relations between the countries.

(Definition of “deteriorate” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"deteriorate" in American English

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deteriorateverb [ I ]

us /dɪˈtɪr·i·əˌreɪt/

to become worse:

She went into the hospital when her condition began to deteriorate.
deterioration
noun [ U ] us /dɪˌtɪr·i·əˈreɪ·ʃən/

a deterioration in relations between the two countries

(Definition of “deteriorate” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"deteriorate" in Business English

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deteriorateverb [ I ]

uk /dɪˈtɪəriəreɪt/ us

to become worse:

If the economy continues to deteriorate, it will affect the firm's future performance.
Sales will decrease as economic conditions deteriorate.
Working conditions in the industry continue to deteriorate.
deteriorate rapidly/sharply/significantly
deteriorate steadily/slowly/gradually

(Definition of “deteriorate” from the Cambridge Business English Dictionary © Cambridge University Press)