Synonyms to secret writing

cryptography, cipher, code, coded message, coup de plume, criticism, cryptanalysis, cryptoanalysis, cryptoanalytics, cryptogram, cryptograph, cryptographer, cryptology, diagnostics, engrossment, epigraphy, exegetics, hermeneutics, ink spilling, inkslinging, inscription, invisible ink, lettering, lexicography, literary criticism, macrography, metoposcopy, micrography, oneirology, paleography, pathognomy, pen, pen-and-ink, pencil driving, physiognomics, physiognomy, scrivenery, scrivening, secret language, semeiology, semeiotics, sympathetic ink, symptomatology, textual criticism, tropology, typewriting, typing, writing, Aesopian language, Babel, Greek, John Hancock, X, a nobody, a nothing, add, algebraize, allegory, alphabetic character, argot, aught, autograph, babble, binary digit, bit, break, calculate, cant, cast, character, charactery, christcross, clear up, common man, compute, conventional symbol, countermark, countersign, countersignature, counterstamp, cross, d