Verb (5-dan, る, intransitive)
1. to become quiet; to quiet down; to quieten down
esp. 静まる
ドアの開く音と共に一瞬で声が静まる。The voices fall silent instantly with the sound of the door opening.
2. to calm down; to die down; to subside; to abate; to be suppressed
esp. 鎮まる
お腹にものを入れたら、怒りはみるみる静まった。Once I got some food in my stomach, my anger quickly subsided.