Deciphered is a word that means to decode or figure out a secret message, code or language. Some antonyms for deciphered can be - encoded, hidden, unintelligible, incomprehensible or encrypted. Encoded means that a message has been transformed into a secret code, which is not easily understood without the appropriate key. Hidden refers to something that is kept out of sight or not easily discovered. Unintelligible means difficult to understand or not clear. Incomprehensible means not understandable due to complexity, obscurity or confusion. Encrypted means something that has been encoded or protected using a specific key, which is not easily understood without the key.