Examples of official secret

• There is no reason why what the inspector has said should be an official secret.

• This was nothing in the nature of an official secret.

• Is it not a fact that a complete fabrication cannot be an official secret?

• What is she—or is that an official secret?

• I can reveal what could well be an official secret and get me into trouble.

• She was told that it was an official secret.

• This letter, which was itself an official secret, was leaked to the press and parts of it appeared in the press.

• I do not know what an official secret is.