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
Shyam	-	Indian, Hindi, Marathi, Telugu, Malayalam, Tamil, Kannada, Bengali, Nepali
Luciano	loo-CHAH-no (Italian), loo-THYAH-no (Spanish), loo-SYAH-no (Latin American Spanish)	Italian, Spanish, Portuguese
Hollis	['hɔlis]
Cherry	['tʃeri:]
Abd Al-Latif	-	Arabic
Parthenope	-	Greek Mythology