irredeemable
[adjective]
Synonyms: irrecoverable, irreclaimable, irremediable, irreparable, irretrievable

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Antonyms: redeemable

[TahlilGaran] English Synonym Dictionary ▲

ir‧re‧deem‧a‧ble /ˌɪrɪˈdiːməbəl◂/ adjective

1. formal too bad to be corrected, repaired, or saved:
Very few children are irredeemable.

2. technical irredeemable bonds pay interest to the person who is lending money but do not have a set date saying when the money being lent must be paid back
—irredeemably adverb

[TahlilGaran] Dictionary of Contemporary English ▲