unsalvably
/ˌʌnsɑːlˈvæbli/; /ˌʌnsɔːlˈvæbli/Definitions
1. adverb
in a way that cannot be saved or recovered; irretrievably
“The damage to the environment was unsalvably done after the industrial accident.”
2. adjective
not capable of being saved or recovered; irretrievable
“The unsalvable losses in the war weighed heavily on the nation’s economy.”