IPA: /ˌɪrɪˈdiməbl/
KK: /ɪrɪˈdiməbl/
Something that cannot be saved, improved, or recovered; it is beyond help or repair.
After the scandal, his reputation was considered irredeemable.
Irredeemable → It is formed from "in-" (meaning not), "redeem" (from Latin "redimere", meaning to buy back or recover), and "-able" (meaning capable of). The word "irredeemable" means not capable of being bought back or recovered, often used in a moral or financial context.
Think of 'not' ('in-') being able to 'recover' something ('redeem') — that's why irredeemable means something that cannot be recovered.