Synonyms of puzzler

1 Syllable
sphinx, why, rune, crux, snag
2 Syllables
stumper, thriller, twister, rebus, poser, question, puzzle, stickler, occult, teaser, chiller, riddle, grabber, problem
3 Syllables
cryptogram, enigma, whodunit, brainteaser, braintwister, mindboggler, mind-twister, puzzlement, conundrum, charade, oracle, mind-boggler, secrecy, subtlety, cliffhanger
4 Syllables
perplexity, abstruseness, difficulty, perplexities
5 Syllables
inscrutableness, mystification
6 Syllables
inscrutability