(n.) One who writes in cipher, or secret characters.

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 code coded message common man compute conventional symbol countermark countersign countersignature counterstamp cross cryptoanalysis cryptoanalytics cryptogram cryptograph cryptographer cryptography decipher device digit divide dope out double Dutch dud dummy emblem encipher encode endorsement estimate extract roots figure figure in figure out figurehead garble gibberish gift of tongues glossolalia gobbledygook goose egg graph grapheme hand hollow man iconology ideogram initials insignificancy integer invisible ink jackstraw jargon jumble lay figure letter lexigraphic character lightweight little fellow little guy logogram logotype love knot man of straw mark mark of signature measure mediocrity monogram multiply nada naught nebbish nichts nihil nil nix no such thing nobody nobody one knows noise nonentity notation nothing nothing at all nothing on earth nothing whatever nullity number numeral numero obscurity phonetic character phonetic symbol pictogram pictographic character pip-squeak punk puppet pushover puzzle out reckon resolve runt score scramble scrub seal secret language secret writing shrimp sigil sign sign manual signature signet slang small fry small potato small potatoes squirt squit subscription subtract syllabic symbol symbolic system symbolism symbolization symbology sympathetic ink take account of tally thing of naught token totem totem pole trifle type unravel unriddle visa vise whiffet whippersnapper whole number work out writing written character zero zilch