irredeemable
/ˌɪrɪˈdi:məbl; ˌɪrɪ`diməbl/ adj
1 (finance财)
(a) (of government annuities, bonds, shares, etc) that cannot be terminated by repayment （指政府年金, 债券、 股票等）不能藉偿还而终止的.
(b) (of paper money) that cannot be exchanged for money in coins （指纸币）不能兑成硬币的.
2 (fml 文) that cannot be restored, reclaimed or saved 不能恢复的; 不能收回的; 不能挽救的
an irredeemable loss, misfortune, etc 不能挽救的损失、 不幸等.