riddle (noun) riddle: brain-teaser
Sinonime: bewilderment, brain-twister,
charade, closed book,
complexity,
complication,
confusion,
conundrum, cryptogram,
dilemma,
distraction,
doubt,
embarrassment,
enigma, entanglement,
intricacy, knotty question,
labyrinth,
maze, mind-boggler,
mystery, mystification, perplexity,
plight, poser,
predicament,
problem,
puzzle, puzzlement,
quandary,
question, rebus, sixty-four dollar question, stickler, strait, stumper, teaser, tough nut to crack, tough proposition, twister