ir ‧ re ‧ ver ‧ si ‧ ble AC /ˌɪrɪˈvɜːsəb ə l◂, ˌɪrɪˈvɜːsɪb ə l◂ $ -ɜːr-/ BrE AmE adjective
[ Word Family: noun : ↑ reversal , ↑ reverse ; adjective : ↑ reverse , ↑ reversible ≠ ↑ irreversible ; verb : ↑ reverse ]
1 . irreversible damage, change etc is so serious or so great that you cannot change something back to how it was before OPP reversible :
Fossil fuels have caused irreversible damage to the environment
2 . if an illness or bad physical condition is irreversible, it will continue to exist and cannot be cured:
Miller is in an irreversible coma.
irreversible blindness
—irreversibly adverb :
His reputation was irreversibly damaged by the affair.