flannel-mouthed

Adjective

 * 1) Possessing, characterized by, or in the manner of speaking of a flannelmouth.
 * 2) Smooth and persuasive in speech, especially in order to deceive or manipulate.
 * 3) Unclear, muffled, or halting in speech.
 * 1) Unclear, muffled, or halting in speech.