Shantideva makes the crucial observation that the "fuel" of anger is what he calls "mental discomfort." . . . The Tibetan word is yi mid-dewa which can be translated as "dejection," "unhappiness," or simply as "dissatisfaction."
— Geshe Thupten Jinpa, Healing Anger by His Holiness The Dalai Lama, Geshe Thupten Jinpa, translator