Verb (5-dan, る, intransitive)
1. to die down (storm, anger, conflict, etc.); to calm down; to cool off; to abate; to be settled; to be brought under control
場の騒ぎはまだ完全には治まっていなかった。The commotion in the room had not yet completely died down.
2. to be at peace; to be governed well
世の中がよく治まっている時代だった。It was an age when the world was at peace and well governed.
3. to subside (of pain, symptoms, etc.); to be alleviated; to get better; to ease off
手の震えはまだ治まっていない。The trembling in my hands has not yet subsided.