What is the meaning of worsening?

noun

• Process of changing to an inferior state.
  • synonyms: deterioration, decline in quality, declension
• Changing something with the result that it becomes worse.

verb

• Grow worse.
  • usage: "Conditions in the slum worsened"
  • synonyms: worsen, decline
• Make worse.
  • usage: "This drug aggravates the pain"
  • synonyms: worsen, aggravate, exacerbate, exasperate

adjective

• Changing for the worse.
  • usage: "worried by the worsening storm"