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
Penuel	-	Biblical, Biblical Hebrew
Mahinder	-	Indian (Sikh)
Hammond	HAM-ənd	English (Rare)
AmÁLie	-	Czech
Hendry	-	Scottish
Lisanne	lee-SAHN-nə	Dutch