keep (one's) lips sealed

(redirected from keep his lips sealed)

keep (one's) lips sealed

To not say anything (about something); to keep (something) a secret. Please keep your lips sealed about our engagement, we aren't ready to tell everybody just yet.
See also: keep, lip, seal
References in periodicals archive ?
Curtis Davies has revealed how he had to keep his lips sealed from his best friend when Blues came in - none other than Darren Carter.
Confidentiality agreements would keep his lips sealed, Clary said.
Mr Stevenson was challenged by his regulars to keep his lips sealed - and the pub also hosted a raffle and disco to raise an expected total of pounds 1,000.
Most likely, though, baseball will give Angelos a huge cash deposit to keep his lips sealed while Montreal moves into Washington, D.