Actually they wanted to prevent him from clearing himself or revealing what he had discovered about Vaxilis' true character.

Court orders prevent anybody from revealing their true identities.

A spell was cast to prevent us from revealing it even if we wanted to.

Each team will have to sign a confidentiality agreement preventing themselves from revealing the details of the Race before airing.

The social workers were bound by rules of confidentiality and legal requirements which prevented them from revealing any relevant information.

This prevents the states from credibly revealing how powerful they are to each other.

Legal protections prevent physicians from revealing their discussions with patients, even under oath in court.

No amount of self-control could prevent Steve from revealing his shock.

If the first block is removed, the one preventing me from revealing the information you request?

It also prevents law enforcement agencies from revealing the information to school officials and others in a community.