1. to make a situation, state, or set of circumstances worse or more difficult
The new policy will worsen the conditions for low-income families.
A nova política vai piorar as condições para as famílias de baixa renda.
2. to cause a deterioration in the quality or status of something
Heavy rainfall could worsen the conditions of the flooded areas.
A chuva forte pode piorar as condições das áreas inundadas.