A central term in Buddhism which is not directly translatable in english. It's a type of unease. Birth is dukkha, aging is dukkha, death is dukkha; sorrow, lamentation, pain, distress, & despair are dukkha; association with what is not loved is dukkha, separation from what is loved is dukkha, not getting what is wanted is dukkha. In short, the five clinging-aggregates are dukkha.

The first Noble Truth is that life and the world is full of suffering, but the Buddha did not speak English and the exact word he used was Dukkha which is a Pali word. Dukkha has many meanings. Anything that is temporary is Dukha. Many people, including myself sometimes, use the word discontentment instead of suffering, though this doesn't quite represent what the Buddha was teaching. The words the Buddha spoke when he spoke on the first noble truth were something like this:

What now is the Noble Truth of Dukkha? Birth is Dukkha, decay is Dukkha, death is Dukkha, sorrow, lamentation, pain, greif and dispair are Dukkha; not getting what one desires is Dukkha, in short the five aggregates are Dukkha.

"dukkha"

Dukkher dukkha

dukkha-life involves suffering

annata-not an individual soul/self

annica-the impermanent nature of all things