Deteriorated

Air quality has deteriorated these past few years.

When the cold winter began, the old man's health deteriorated.

Corporate results deteriorated because of recession.

In 2000 Japan's health care system was the best in the world, but since clinical internship was introduced in 2003 it has clearly deteriorated.

After I returned from Turkey, my Turkish deteriorated.

The situation has deteriorated.

Tom was shocked to see how much his mother had deteriorated since he last saw her six months ago.

Tom's health has gradually deteriorated over the past six months.

Mary's enthusiasm for her course deteriorated when her favourite lecturer transferred interstate.

The situation has really deteriorated.