irredeemable

US /ˌɪr.əˈdiː.mə.bəl/
UK /ˌɪr.əˈdiː.mə.bəl/
1.

tidak boleh ditebus

impossible to correct, improve, or change:

:
There are irredeemable flaws in the logic of the argument.
1.

tidak boleh ditebus

bonds that pay interest but have no agreed date on which the borrower must pay the lender:

:
Irredeemables have no redemption date at all, so that interest on them will be paid indefinitely.