irretrievable

irretrievable /ˌirɪˈtriːvəbəl/ adjective
irretrievable
/ˌirɪˈtriːvəbəl/
adjective
Britannica Dictionary definition of IRRETRIEVABLE
somewhat formal
: impossible to recover or get back

— irretrievably

/ˌirɪˈtriːvəbli/ adverb