that can't be bought straight back or repaid: an irredeemable annuity.
Not convertible into coin.
impractical to remedy: irredeemable losings.
impractical to get or reform: an irredeemable evil.
perhaps not redeemable; unredeemable; not able to be restored, restored, revoked, or escaped.
incapable of be terminated by a payment or converted to another as a type of currency or monetary tool, especially one considered more secure or reliable.
perhaps not redeemable; that can not be used; not payable in gold or silver, as a bond; -- used specifically of these government records, released as money, because are not convertible into money at satisfaction associated with the owner.
(of paper money) perhaps not convertible into coin in the satisfaction associated with owner