秘密をもらさないように口をふさぐの英語

to keep something secret from a person

We took great care not to reveal the secret.

You should not betray people―give away people.

Please leave the secret untold.

with no effort to conceal

to entrust secrets or private matters to another person

to keep the matter （a） secret―preserve secrecy

to confide a secret to one―disclose a secret to one―divulge a secret to one―reveal a secret to one―unbosom oneself of a secret to one―unburden oneself of a secret to one―disburden oneself of a secret to one―let one into the secret

an act of keeping something secret and not telling anyone about it

Make a clean breast of your secrets.

Don't let the cat out of the bag.

I cannot confide in anyone.

There is no key to the mystery―no clue to the mystery.

unseal one's lips

the mysteries of an art

to be able to keep a secret from people

It shall remain a secret for ever.

I am sworn to secrecy―bound to secrecy―pledged to secrecy―under pledge of secrecy―under a vow of secrecy.

to continue to keep something a secret

to bribe one into secrecy

to keep something secret

to observe strict secrecy

to betray a person―give one away

babble (out) a secret

I am sworn to secrecy―bound to secrecy―pledged to secrecy―under pledge of secrecy―under a promise of secrecy.

Absolute secrecy is preserved.

leak out a secret in dribs and drabs

There is no key to the mystery.

secret and sly or sordid

Do not let the cat out of the bag!