Craving / thirst
The thirst that is never quite quenched — wanting the next thing, and the next, forever.
Taṇhā (the early Buddhist word, literally "thirst") is craving — the restless thirst that, according to Buddhism, lies at the root of our suffering. The Buddha identified it as the origin of dukkha, the deep unsatisfactoriness woven through ordinary life. Importantly, taṇhā is more than ordinary desire. It is the compulsive, grasping quality of wanting: the inner pull that is never finally satisfied, because the moment one thirst is slaked another arises.
The teaching distinguishes three flavors of this thirst. The first is craving for sense pleasures — wanting pleasant sights, sounds, tastes, sensations, and experiences, and chasing the next one when they fade. The second is craving for existence — the deep urge to keep being, to continue, to secure and preserve oneself. The third is craving for non-existence — the urge to get rid of, to push away, to make unwanted experience or even oneself disappear. Notice that this last one shows craving is not only about grabbing toward things; aversion, the wish to be rid of what we dislike, is the same thirst running in reverse.
The Buddha's diagnosis carries a hopeful flip side. If thirst is the cause of suffering, then easing the grip of thirst eases suffering — and the cooling of craving is precisely what nirvāṇa (literally "blowing out," like a flame going out) means. This is not a command to feel nothing or to stop caring; one can act, love, and aspire without the clutching, never-enough quality of taṇhā. A note on lineage: the broad idea that craving binds us is shared across several ancient Indian traditions, but the precise framing of taṇhā as the specific origin of suffering, with its threefold analysis, is distinctively the Buddha's.
Key passages(20)
Heartwood of the Bodhi Tree: The Buddha's Teaching on Voidness · Buddhadāsa Bhikkhu
The Word of the Buddha: An Outline of the Teaching of the Buddha in the Words of the Pali Canon · Nyanatiloka Mahāthera