秘密の首領の英語

to disclose a secret―divulge a secret―reveal a secret

an open secret

a confidential secretary

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

backstairs intimacies

to expose a secret

matter or event defined by evaluation (secret matter)

The matter must be kept secret

in a confidential manner

to keep the matter a secret

in secrecy

of something, the state of being a secret

to clear up a mystery

to observe strict secrecy

the act of keeping something a secret

a supposed secret that everyone knows about

a personal secret

a close secret

something that is kept secret

to clear up a mystery

to keep something a secret

a secret watcher

an auricular confession

to betray a person―give one away

to swear one to secrecy―bind one to secrecy

a curtain of secrecy

kept secret

in secrecy

secret missions

to divulge a secret―blab a secret―let out a secret―let the cat out of the bag