ir ‧ re ‧ triev ‧ a ‧ ble /ˌɪrɪˈtriːvəb ə l◂/ BrE AmE adjective formal
1 . an irretrievable situation cannot be made right again:
the irretrievable breakdown of their marriage
2 . irretrievable loss the loss of something that you can never get back
—irretrievably adverb :
irretrievably lost