Incoherent

a.
  1. Not coherent; wanting cohesion; loose; unconnected; physically disconnected; not fixed to each; -- said of material substances.
  2. Lacking logical coherence or agreement; incongruous; inconsistent; having no dependence of one part on another; logically disconnected; rambling; -- of speech or discourse.
  3. Exhibiting incoherent{2} speech or thought; -- of people; as, a confused and incoherent accident victim.
  4. Lacking harmony or congruity of parts.