irretrievable[adjective]Synonyms: irrecoverable, irreclaimable, irredeemable, irremediable, irreparable
Antonyms: retrievable
 [TahlilGaran] English Synonym Dictionary ▲
 ir‧re‧triev‧a‧ble /ˌɪrɪˈtriːvəb
əl◂/ 
 adjective formal1.  an irretrievable situation cannot be made right again: 
 the irretrievable breakdown of their marriage2.  irretrievable loss
 the irretrievable breakdown of their marriage2.  irretrievable loss the loss of something that you can never get back
—irretrievably adverb: 
 irretrievably lost
 irretrievably lost  [TahlilGaran] Dictionary of Contemporary English ▲