aggravate

to make a bad situation or condition worse ทำให้แย่ลง

The traffic problem is aggravated by the presence of hundreds of motorcycles on the road no matter what time of day.

In Lampang, more people have sought treatment for respiratory and heart illnesses aggravated by the haze.

Panita said the massive use of private transportation in Bangkok causes air pollution, which can aggravate global warming.