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
Thancmar	-	Ancient Germanic
ÙNa	OO-na	Scottish
Bibiana	bee-BYAH-nah (Italian, Spanish)	Italian, Spanish, Late Roman
Martyn	-	Welsh, Ukrainian
Izumi	ee-zoo-mee	Japanese
Iarlaith	EER-lah	Irish