IPA: /ˌʌn.rɪˈdiː.mə.bəl/
KK: /ʌnˈridiməbl/
Something that cannot be saved, improved, or corrected.
The situation seemed unredeemable after all the mistakes made.
Unredeemable → It is formed from "un-" (meaning not) and "redeem" (from Latin "redimere", meaning to buy back or recover) and "-able" (meaning capable of). The word "unredeemable" means not capable of being bought back or recovered.
Think of 'not' ('un-') being able to 'recover' ('redeem') something — that's why unredeemable means it cannot be recovered.