治まる
JLPT N2 · Verbおさまる(osamaru)声调 3
to die down (storm, anger, conflict, etc.); to calm down; to cool off; to be at peace; to be governed well; to subside (of pain, symptoms, etc.)
薬を飲んで、すぐ痛みが治まった。— After taking the medicine, the pain subsided right away.