形容词

1. 相对立的;不兼容的
If two things such as opinions or proposals are irreconcilable, they are so different from each other that it is not possible to believe or have both of them.

2. 不可调和的;无法消除的
An irreconcilable disagreement or conflict is so serious that it cannot be settled.

1. impossible to reconcile

e.g. irreconcilable differences

Synonym: unreconcilable