1. Not uttered with articulation or intelligible distinctness, as speech or words. Music which is inarticulate poesy. (Dryden)
2. (Science: zoology) Not jointed or articulated; having no distinct body segments; as, an inarticulate worm. Without a hinge; said of an order (Inarticulata or Ecardines) of brachiopods.
3. Incapable of articulating. The poor earl, who is inarticulate with palsy. (Walpole)
Origin: L. Inarticulatus; pref. In- not – articulatus articulate.