Synonyms of cryptogram

1 Syllable
sphinx, code
2 Syllables
thrillers, thriller, stumper, rebus, cipher, stumpers, teasers, sphinxes, teaser, puzzler, sphinges, puzzlers, riddle, riddling, writing, chillers
3 Syllables
mystery, whodunit, braintwister, brainteaser, mindboggler, mind-twister, mysteries, brain-twister, figure
4 Syllables
perplexity, abstruseness, perplexities
5 Syllables
abstrusenesses, inscrutableness, representation
6 Syllables
inscrutability