Unrecoverable (adjective)

1. Not able to be regained or restored.
2. Not capable of being recovered, regained, or restored.
3. Not capable of being repaid or compensated.

Origin:

Early 17th century, from un- + recoverable.

Examples:

1. The loss of the company was considered unrecoverable and many employees lost their jobs.
2. The damage to the painting was deemed unrecoverable and it was deemed priceless.
3. The situation in the country was deemed unrecoverable and the government decided to intervene.
4. The funds lost in the investment were unrecoverable and the investors were left with a huge loss.
5. The data was unrecoverable and it was a huge blow to the company.