Rule 33

A person who would otherwise have a privilege to refuse to disclose or prevent another from disclosing any specific matter waives his right to claim such privilege if the court finds that such person, or any other person who was the holder of the privilege, is bound by word given to another not to claim the privilege, or that, without coercion and having full knowledge of the privilege, said person disclosed or permitted disclosure by another of any part of the privileged matter. This rule is not applicable to privileges under Rules 23 and 24.