or (more rarely): a feeling or idea that is not expressed
The exact meaning of inarticulate depends upon its context. For example:
unable to find good words to express oneself — as in "She gets inarticulate when she's nervous."
verbally expressing a feeling without words — as in "She uttered an inarticulate cry of despair."
unable to make oneself heard and understood — as in "She mumbled inarticulately."
unable to speak — as in "She was inarticulate with rage."
a feeling or idea that is not expressed — as in "We shared an inarticulate fear."
inability to express or understand feelings or ideas — as in "She is emotionally inarticulate, " or "Her symphony is inarticulate."
The repose of the latter became more and more disturbed; and her sister, who watched, with unremitting attention her continual change of posture, and heard the frequent but inarticulate sounds of complaint which passed her lips, was almost wishing to rouse her from so painful a slumber, when Marianne, suddenly awakened by some accidental noise in the house, started hastily up, and, with feverish wildness, cried out,— "Is mama coming?
Chapter 43 (38% in)
There are no more uses of "inarticulate" in Sense and Sensibility.