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Webster 1828 Edition
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.]