There are a variety of synonyms for the phrase "not recoverable," all of which reference an irretrievable loss or damage. Other phrases that might be used in place of "not recoverable" include "irredeemable," "unredeemable," "unrecoverable," "incurable," "irreparable," and "unsalvageable." These descriptive words can be applied to different situations. For instance, unrecoverable might refer to files, documents, or data that have been lost or corrupted. Irreparable might be used to describe damage to an object that is beyond repair. In every case, these words convey a sense of finality and loss, suggesting that the item or situation is damaged beyond repair or retrieval.