decrypt v. + Add to list UK //dɪkɹˈɪpt// de·crypt SynonymsAntonymsEtymology Synonyms decipherdecode Antonyms encodeOriginGRKκρυπτός→ENdecrypt From de- + -crypt, from Ancient Greek κρυπτός (kruptós, literally “hidden, concealed, private, secret”).