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January 24, 2026

deteriorate

/dɪˈtɪəɹɪəɹeɪt/verb

To gradually become worse in quality, condition, or strength.

Example sentences

  • “His health deteriorated quickly after the operation.”
  • “Relations between the two countries have deteriorated since the election.”
  • “The old bridge was left to deteriorate for decades.”

Usually used without an object: something deteriorates on its own, slowly rather than suddenly. The noun is 'deterioration'.

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