To diminish or impair in quality, character, or value: Time and neglect had deteriorated the property. 1. To grow worse; degenerate: The weather deteriorated overnight. 2. To weaken or disintegrate; decay: The nation's highways are deteriorating at a rapid pace. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.