*inarticulate*

a. [ L. inarticulatus; pref. in- not + articulatus articulate. ] [ 1913 Webster ]

1. Not uttered with articulation or intelligible distinctness, as speech or words. [ 1913 Webster ]

Music which is inarticulate poesy. Dryden. [ 1913 Webster ]

2. (Zool.) (a) Not jointed or articulated; having no distinct body segments; as, an inarticulate worm. (b) Without a hinge; -- said of an order (Inarticulata or Ecardines) of brachiopods. [ 1913 Webster ]

3. Incapable of articulating. [ R. ] [ 1913 Webster ]

The poor earl, who is inarticulate with palsy. Walpole.

4. Incapable of expressing one's ideas or feelings clearly. [ PJC ]