Not recoverable; that cannot be recovered.(adjective)
From which recovery is not possible.(adjective)
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Use "unrecoverable" in a sentence
"Companies such as AdvancePath Academics scoop up students classified as unrecoverable by traditional schools and help them complete their education."
"O'BRIEN: If that failed, however, then you've got another situation which could cause a lot of what they call, what the investigators call parasitic drag, which is another way of saying forcing it into a steep left bank, and ultimately if it's unrecoverable -- in other words, if the other control surfaces here cannot compensate for it, that could very well put it into a spin, an inverted position that cannot be recovered no matter how hard the pilot tries -- John, any other thoughts?"
"Loans categorized as "unrecoverable" amounted to 3.1% of its portfolio."