deteriorate

 
Pronunciation: /dɪˈtɪərɪəreɪt/

verb

[no object]
  • become progressively worse: relations between the countries had deteriorated sharply (as adjective deteriorating) deteriorating economic conditions

Derivatives

deteriorative

Pronunciation: /-rətɪv/
adjective

Origin:

late 16th century (in the sense 'make worse'): from late Latin deteriorat- 'worsened', from the verb deteriorare, from Latin deterior 'worse'