irreversible
/ˌɪr.ɪˈvɝ.sə.bəl/ adjective C1- Incapable of being reversed or turned about or back; incapable of being made to run backwards. · an irreversible engine
- Incapable of being reversed, recalled, repealed, or annulled. · an irreversible sentence or decree
- Incapable of being reversed to the original state without consumption of free energy and increase of entropy.
From the library
As the nineteenth century progressed, the linguistic paths of the two nations continued to drift apart in subtle yet irreversible ways.
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