英和和英

a key to open a secret storehouse

a key to the mystery

a private code

an auricular confession

a veil of secrecy

a curtain of secrecy

a confidential secretary

a secret key to achieving something

a secret word

secrets

a secret despatch

a confidential despatch

the key to the door

the key to the door

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

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

to disclose a secret―divulge a secret―reveal a secret―give away the secret

secret vote

secret

secret papers―secret documents

a concealed weapon

break the code

to decipher a code

to keep something a secret

to expose a secret

the structure of a secret code

a cipher-key

open secrets

to clear up a mystery

disclose a secret