irredeemable (adj.)

• gone
• graceless
• inconvertible
• incorrigible
• incurable
• inoperable
• irreclaimable
• irrecoverable
• irremediable
• irreparable
• irretrievable
• irreversible
• irrevocable
• lost
• ruined
• terminal
• undone
• unmitigable
• unredeemable
• unregenerate