the point at which a person becomes very angry, or a situation is likely to become violent
نقطه جوش خشم, نقطه بحرانی, آستانه عصبانیت, لحظه انفجار, مرز فوران, آستانه خشونت, مرز عصبانیت, نقطه اوج تنش
Public frustration has reached boiling point.
Kate’s anger was reaching boiling point.