Irrecoverable

Ir`re*cov"er*a*ble (?), a. Not capable of being recovered, regained, or remedied; irreparable; as, an irrecoverable loss, debt, or injury.

That which is past is gone and irrecoverable.
Bacon.

Syn. -- Irreparable; irretrievable; irremediable; unalterable; incurable; hopeless.

-- Ir`re*cov"er*a*ble*ness, n. -- Ir`re*cov"er*a*bly, adv.