irreconcilable
adjective uk/ˌɪr.ek.ənˈsaɪ.lə.bəl/ us/ˌɪr.ek.ənˈsaɪ.lə.bəl/
不可调和的；难以应付的
impossible to find agreement between or with, or impossible to deal with
irreconcilable differences of opinion 不可调和的意见分歧
They have become irreconcilable, with both sides refusing to compromise any further. 他们双方都拒绝进一步妥协，和解已经不可能了。