muffle up

muffle something up

to deaden or stifle a sound. Betty tried to muffle the sounds up, but everyone heard what was going on. She muffled up the sounds.

Name	Pronounced	Usage
Waqar	-	Arabic
Franny	FRAN-ee	English
Briony	BRIE-ən-ee	English (Rare)
Baish	[beiʃ]
Ksenija	-	Serbian, Croatian, Macedonian, Slovene
Funske	FUNS-kə	Dutch, Limburgish