ir·re·vers·ible 
/ˌirɪˈvɚsəbəl/ adjective
/ˌirɪˈvɚsəbəl/ adjective somewhat formal : impossible to change back to a previous condition or state
▪ He suffered an irreversible loss of vision. ▪ The crisis has done irreversible harm to the countries' relations.
▪ He suffered an irreversible loss of vision. ▪ The crisis has done irreversible harm to the countries' relations.
— ir·re·vers·ibly /ˌirɪˈvɚsəbli/ adverb
▪ Their relationship has been irreversibly harmed.
/ˌirɪˈvɚsəbli/ adverb ▪ Their relationship has been irreversibly harmed.
