unrepairable

[ uhn-ri-pair-uh-buh l ]
/ ˌʌn rɪˈpɛər ə bəl /

adjective

that cannot be repaired: Some old clocks are unrepairable.
that cannot be rectified or remedied; irreparable.

Origin of unrepairable

First recorded in 1605–15; un-1 + repair1 + -able