secret code
Spy's written system
A secret code is a system of symbols, words, or signals used to communicate hidden meanings, accessible only to those who know how to decipher it.
Children devise secret codes for passing notes; spies use them for transmitting intelligence.
The phrase also applies loosely to any insider language or private shorthand: Twins often develop their own secret code.
- cipherHidden writing system
- crypticObscure in meaning
- encryptedTransformed into cipher
- passwordAuthentication string
- hiddenKept out of sight
hidden message · message · spy · private eye · enigma · classified · covert · puzzle · mystery · escape room · key · scrambled · transmission · intelligence · steganography · military · whisper · clandestine
- codespassword, binary, DNA, RNA, passcode
- access codespasscode, keycode, combination, safe combination, screen lock
- communication systemsalphabet, sign language, Braille, hieroglyphics, cuneiform
- code bookscipher key, substitution cipher
- codes and cipherscipher, decrypt, encrypt, ciphertext, plaintext
- cryptic puzzlesriddle, cipher, cryptogram, enigma, puzzle
secret codeplain text
Unencoded readable characters
plaintext · cleartext · clear text · open communication · straight talk
secret codepublic announcement
Official communication to all
open communication · common knowledge · public information · broadcast message · open book
secret, code, secrets, secrete, secreted, secreting, secretion, secretive, secretively