When it comes to communicating discreetly, having a secret code can be incredibly helpful. But sometimes, using the same phrase over and over can attract unwanted attention. That's where synonyms come in handy. A few alternate ways to refer to a secret code could include a cipher, password or passcode, a cryptograph, or a hidden message. In some cases, a secret language or jargon could also be used to communicate covertly. Whatever phrase is used, it's important to keep it confidential and avoid sharing it with anyone who shouldn't be in on the secret.