The phrase "fox message" can have multiple synonyms depending on the context and use of the term. Some common synonyms that can be used are a "coded message," which refers to a message that is disguised or concealed with a specific pattern or code. Another alternative is a "cryptic message," which requires close examination or decryption to understand the actual meaning. Other synonyms include a "secret message," which is intended for a specific person or group and a "hidden message" that is not immediately evident to the receiver. Alternatively, "coded communication," "stealth message," or "disguised signal" could also be used to depict the fox message.