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
Frances	FRANT-səs	English
Dae-Jung	day-joong	Korean
Carola	kah-RO-lah (German)	Italian, German, Dutch, Swedish
Jephthah	JEF-thə (English)	Biblical
Omar (2)	-	Biblical
Donna	['dɔnə]