worsen (悪化する): The weather worsened as the day went on. (１日が進むにつれて天気は悪化しました) - 試験に出る! 英単語検索辞書

worsen (悪化する): The weather worsened as the day went on. (１日が進むにつれて天気は悪化しました)

The weather worsened as the day went on.