1. The quality or state of being incoherent; lack of coherence; lack of cohesion or adherence. Boyle. [ 1913 Webster ]
2. Lack of connection; incongruity; inconsistency; lack of agreement or dependence of one part on another; as, the incoherence of arguments, facts, etc. [ 1913 Webster ]
Incoherences in matter, and suppositions without proofs, put handsomely together, are apt to pass for strong reason. Locke. [ 1913 Webster ]