irredeemable

English Thesaurus

1. (of paper money) not convertible into coin at the pleasure of the holder (adj.all)

similar	:	inconvertible, unconvertible, unexchangeable,
definition	:	used especially of currencies; incapable of being exchanged for or replaced by another currency of equal value (adj.all)

2. insusceptible of reform (adj.all)

similar	:	wicked,
definition	:	morally bad in principle or practice (adj.all)