eternity
Pronunciation: /ɪˈtəːnɪti, iː-/
noun ( plural eternities)
- infinite or unending time: their love was sealed for eternity this state of affairs has lasted for all eternity
- a state to which time has no application; timelessness: the encounter between time and eternity symbolic inklings of eternity
- Theology endless life after death: immortal souls destined for eternity
- used euphemistically to refer to death: he could have crashed the car and taken them both to eternity
- (an eternity) informal a period of time that seems very long, especially on account of being tedious or annoying: a silence that lasted an eternity

Origin:
late Middle English: from Old French eternite, from Latin aeternitas, from aeternus 'without beginning or end' (see eternal)