ファング一家の奇想天外な秘密の英語

a family skeleton

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

Absolute secrecy is preserved.

secret guilty deeds

to keep the matter （a） secret―preserve secrecy

to be able to see through a secret or a trick

secret and sly or sordid

a brief, written correspondence that is confidential

to betray a person―give one away

the disclosure of something secret

The family has a skeleton in the cupboard.

a secret edict of Japan's Imperial court

backstairs intimacies

of something, the state of being a secret

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

the most important of all secret matters

in a confidential manner

an imperial edict secretly issued

She may spill the beans.

to keep the matter a secret

to be able to expose a secret

a secret room

an open secret

a matter that is kept secret

an esoteric or occult matter resembling the Kabbalah that is traditionally secret

The secret leaked out.

The matter must be kept secret

the secret compartment in the desk

I have spied out―searched out―traced out―tracked out―ferreted out―wormed out―pumped out―all the secrets.

I know his secret.