Synonyms of puzzling

1 Syllable
greek, queer, hard
2 Syllables
hi-tech, gasser, queerer, baffling, cryptic, delphic, vaguest, queerest, knottier, unclear, vaguer, knotty, muzzier, muzzy
3 Syllables
involved, daedalean, mystifying, misleading, perplexing, singular, abstruse, fathomless, difficult, mysterious, obscure, surprising, ambiguous, intriguing
4 Syllables
implausible, unknowable, enigmatic, elusive, polysemous, ungraspable, complicated, equivocal, problematic, elusory, embarrassing, bewildering, casuistical, convoluted, sophistical, inexplicit, multivocal, incoherent, alchemistic, reticular
5 Syllables
unaccountable, unfathomable, enigmatical, incognizable, undefinable, astrological, inexplicable, unexplainable, labyrinthine, unconceivable, problematical, incohesive, inexplainable
6 Syllables
uncomprehensible, incomprehensible, uninformative