Smooth and persuasive in speech, especially in order to deceive or manipulate. / Unclear, muffled, or halting in speech.

Using foul or scurrilous language; slanderous.

Not sensitive to the bit; not easily governed. / Hard-featured about the mouth.

Expanding at the mouth.

(obsolete) Having a projecting under jaw; prognathous.

An aphthous ulcer; an open sore in the mouth, or rarely a break in the mucous membrane or the epithelium on the lips or surrounding the mouth.

Alternative form of birdsmouth.

Extreme tooth decay resulting from long-term use of methamphetamine.

A person having a mouth full of words; a chatterer.

(obsolete, UK) A superficially friendly person, who is otherwise not a friend.