She had just been told, by a total stranger, something she'd kept completely secret for seventeen years.

I don't think anyone did, but as you well know there is really no such thing as a completely secret operation.

Once the boys were inside, their conferences were completely secret.

In all of their previous missions, radio had been unknown and, therefore, completely secret.

Then, of course, you have to keep it all completely secret!

You understand that it has been impossible to keep our losses completely secret.

He uses no advertising, but the events are not completely secret.

For the first several years the unit remained completely secret.

Votes can also be a completely secret ballot (for example when the President is elected).

If a patent is subsequently issued, the data will remain completely secret.