irredeemable
/ɪɹəˈdiːməbəl/
noun
Meaning
A financial instrument that cannot be freely redeemed.
adjective
Meaning
Not redeemable; not able to be restored, recovered, revoked, or escaped.
(of debts, currency, etc.) Not able to be cancelled by a payment or converted to another form of currency or financial instrument, especially one considered more secure or reliable.
Synonyms