Synonyms of thrillers

1 Syllable

sphinx, why, rune, crux

2 Syllables

stumper, twister, rebus, poser, question, stickler, occult, teaser, chiller, riddle, grabber, problem

3 Syllables

cryptogram, enigma, whodunit, brainteaser, braintwister, mindboggler, puzzlement, conundrum, charade, oracle, secrecy, subtlety, cliffhanger

4 Syllables

perplexity, abstruseness, difficulty

5 Syllables

inscrutableness, mystification

6 Syllables

inscrutability