苦

(sa) duḥkha, 豆佉 bitterness; unhappiness, suffering, pain, distress, misery; difficulty. There are lists of two, three, four, five, eight, and ten categories; the two are internal, i. e. physical and mental, and external, i. e. attacks from without. The four are birth, growing old, illness, and death. The eight are these four along with the pain of parting from the loved, of meeting with the hated, of failure in one's aims, and that caused by the five (sa) skandhas; cf. 四諦.