flap (one's) gums

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To chatter or blather. Quit flapping your gums—I need some quiet so I can think! Whenever Charlie starts to flap his gums, I can't get in a word!

Name	Pronounced	Usage
Nuala	NOO-ə-lah	Irish
Nassim	nah-SEEM	Arabic
EmÁNuel	-	Hungarian
Verdandi	-	Norse Mythology
Lawanda	lə-WAHN-də	African American
Franklin	['fræŋklin]