irreconcilableness

Example:The unreconcilability of their desires made it impossible for them to agree on any terms.

Definition:The condition or quality of being unreconcilable; a fundamental incompatibility or conflict that cannot be reconciled or resolved.

Example:Their unreconciliable positions on policy led to a complete breakdown of negotiations.

Definition:That cannot be reconciled or brought to a resolution, especially due to fundamental differences or incompatibility.