Step 1 : Introduction to the question "5. As a Canadian I am used to brutal winters. This winter has been the worst one yet. Trying to cross the curbs with snow piled so high exacerbates the pain in my knee. Can you tell me what the word exacerbates means in this context?"
...1. To lessen the severity of something 2. To improve the condition of something 3. To keep the intensity of something unchanged 4. To increase the severity of something Eastenders01 from the Scrambled Eggheads said "The word exacerbate is often used in medical terminology. It is used when something aggravates a condition, though at times I wonder if I eggsacerbate my team leader!"