Dukkha

Dukkha (Pāli दुक्ख ; according to grammatical tradition from Sanskrit  "uneasy", but according to Monier-Williams more likely a Prakritized form of "unsteady, disquieted") is a central concept in Buddhism, the word roughly corresponding to a number of terms in English including sorrow, suffering (or pain), affliction, anxiety, dissatisfaction, discomfort, anguish, stress, misery, and frustration. The term is probably derived from duḥstha, "standing badly," "unsteady," "uneasy."
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Duhkha (Sanskrit) [from dus + kha; or from duhstha standing badly, unsteady, unhappy] Painful, difficult; as a noun, pain, affliction, trouble, personified as the son of Naraka and Vedana.

The Buddhist understanding of the nature of life, especially human life. It is suffering, pain, misery, and death. To see how dukkha is explained within Theravada Buddhism, click here .