intransitive verb
Definition: To make a facial expression that shows displeasure or to speak in a way that is exaggerated or affected.
Example: He mouthed the words of the song without making any sound.
noun
Definition: The part of the face used for eating, speaking, and making sounds; it includes the lips, teeth, and tongue.
Example: She smiled and opened her mouth to speak.
transitive verb
Definition: To speak or express something, often in a way that is not clear or is exaggerated.
Example: He mouthed the words of the song without making any sound.