Sputter

v. i.
  1. To spit, or to emit saliva from the mouth in small, scattered portions, as in rapid speaking.
  2. To utter words hastily and indistinctly; to speak so rapidly as to emit saliva.
  3. To throw out anything, as little jets of steam, with a noise like that made by one sputtering.

v. t.
  1. To spit out hastily by quick, successive efforts, with a spluttering sound; to utter hastily and confusedly, without control over the organs of speech.

n.
  1. Moist matter thrown out in small detached particles; also, confused and hasty speech.