Adverb
In an irretrievable manner.
Source: Webster's dictionaryit is irretrievably lost Source: Internet
And yes, the dress was irretrievably ruined. Source: Internet
But for ASUU's agitations, tertiary education in Nigeria would have collapsed irretrievably. Source: Internet
His labor has been irretrievably mixed with the land, and the land is therefore his or his assigns' in perpetuity." Source: Internet
Furthermore, the Georgian literati, reacting to Russian rule in Georgia and the suppression of national institutions, contrasted Tamar's era to their contemporary situation, lamenting the irretrievably lost past in their writings. Source: Internet
In this he confirmed his own extramarital affair with Camilla Parker Bowles, saying that he had rekindled their association in 1986, only after his marriage to the Princess had "irretrievably broken down". Source: Internet