unreconcilable

UNRECONCI'LABLE,

1. That cannot be reconciled; that cannot be made consistent with; as two unreconcilable propositions. [In this sense, irreconcilable is generally used.]

2. Not reconcilable; not capable of being appeased; implacable.

3. That cannot be persuaded to lay aside enmity or opposition, and to become friendly or favorable; as unreconcilable neighbors.

[Irreconcilable is generally used.]