decipher [deciphered, deciphering, deciphers]◼◼◼(to decode or decrypt a code or cipher) verb [UK: dɪ.ˈsaɪ.fə(r)] [US: də.ˈsaɪ.fər]His handwriting is impossible to decipher. = Il est impossible de déchiffrer son écriture.
decrypt [decrypted, decrypting, decrypts]◼◼◻(to convert back to plain text) verb [UK: diː.ˈkrɪpt] [US: diː.ˈkrɪpt]