Incoherency

Webster's Dictionary of the English Language

·noun That which is incoherent.

II. Incoherency ·noun The quality or state of being incoherent; want of coherence; want of cohesion or adherence.

III. Incoherency ·noun Want of connection; incongruity; inconsistency; want of agreement or dependence of one part on another; as, the incoherence of arguments, facts, ·etc.