Why this word is great
KLESHA — [Noun] A mental affliction or impurity, such as ignorance, egoism, or aversion, that clouds the mind and perpetuates suffering, as defined in yoga and Indian philosophy. Borrowed from Sanskrit क्लेश (kleśa, "pain, affliction, distress"). Unlike an "emotion," a broad and neutral spectrum of feeling, or an "obstacle," a general external hindrance, a klesha is the specific, internal poison that colors perception and generates the obstacle itself. It is the habitual clenching of the jaw before a difficult conversation, the brittle armor of pride masking insecurity, and the deep, unquestioned hum of mistaking the transient for the permanent—the subtle, persistent friction that turns all experience into wear.