Dukkha Talks

Duḥkha (; Sanskrit: दुःख, Pali: dukkha) "suffering", "pain", "unease", or "unsatisfactoriness", is an important concept in Buddhism, Jainism and Hinduism. Its meaning depends on the context, and may refer more specifically to the "unsatisfactoriness" or "unease" of craving for and grasping after transient 'things' (sense objects, including thoughts), expecting pleasure from them while ignorant of this transientness. In Buddhism, dukkha is part of the first of the Four Noble Truths and one of the three marks of existence. The term also appears in scriptures of Hinduism, such as the Upanishads, in discussions of moksha (spiritual liberation).

While the term dukkha has often been derived from the prefix du- ("bad" or "difficult") and the root kha ("empty," "hole"), meaning a badly fitting axle-hole of a cart or chariot giving "a very bumpy ride," it may actually be derived from duḥ-stha, a "dis-/ bad- + stand-", that is, "standing badly, unsteady," "unstable."

From Duḥkha on Wikipedia