Source : Webster's Revised Unabridged Dictionary (1913)

Inarticulate \In`ar*tic"u*late\, a. [L. inarticulatus; pref. in-
   not + articulatus articulate.]
   1. Not uttered with articulation or intelligible
      distinctness, as speech or words.

            Music which is inarticulate poesy.    --Dryden.

   2. (Zo["o]l.)
      (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.

   3. Incapable of articulating. [R.]

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

Source : WordNet®

inarticulate
     adj : without or deprived of the use of speech or words;
           "inarticulate beasts"; "remained stupidly inarticulate
           and saying something noncommital"; "inarticulate with
           rage"; "an inarticulate cry" [syn: {unarticulate}]
           [ant: {articulate}]