If a bad situation worsens or if something worsens it, it becomes more difficult, unpleasant, or unacceptable.
近义词
deteriorate , get worse
双语例句
例： The security forces had to intervene to prevent the situation worsening.
安全部队不得不介入，以防止局势进一步恶化。
例： They remain in freezing weather and rapidly worsening conditions.
他们仍然被困于严寒天气和急剧恶化的环境之中。