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
Faustine	-	French
Melvin	MEL-vin	English
Kayetan	KAH-ye-tahn	German
Sappheire	-	Biblical Greek
Else	[els]
RiagÁN	-	Irish