Synonyms of thriller

1 Syllable
sphinx, why, rune, crux
2 Syllables
stumper, twister, rebus, poser, stumpers, question, stickler, teasers, sphinxes, occult, teaser, puzzler, chiller, sphinges, puzzlers, riddle, grabber, problem, chillers
3 Syllables
cryptogram, page-turner, mystery, enigma, whodunit, brainteaser, braintwister, mindboggler, suspense, mysteries, puzzlement, conundrum, charade, oracle, secrecy, subtlety, cliffhanger
4 Syllables
perplexity, abstruseness, difficulty, spine-chiller, perplexities
5 Syllables
abstrusenesses, inscrutableness, mystification
6 Syllables
inscrutability