keep mum Synonyms

clam up shut up be quiet keep your face shut keep silent become silent stop talking remain silent zip one's lip not let out a peep shut your mouth shut your face shut one's trap shut one's gob shut your trap zip your lip shut your gob be the soul of discretion not tell a soul cut the cackle button your lip stay silent stay quiet be speechless be discreet keep secret button one's lips shut one's face say nothing say no more shush hush up shut one's mouth keep quiet keep one's mouth shut dummy up button up belt up quieten close up be silent bite one's lip bite one's tongue pipe down keep schtum keep one's lips sealed keep shtum hush one's mouth quieten down hush down