What is another word for head-scratcher?

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Noun Something or someone puzzling, mysterious or inexplicable conundrum puzzle mystery enigma riddle puzzlement secret mystification why poser closed book problem question paradox stumper puzzler quandary perplexity dilemma mind-boggler tough nut to crack question mark sixty-four dollar question unsolved problem twister teaser challenge bewilderment brainteaser brain-teaser mind-twister stickler complexity crux cryptogram difficulty charade abstruseness abstrusity facer braintwister sixty-four-thousand-dollar question difficult question knotty question roun mindboggler vexed question tough proposition cruncher tough one cliffhanger Gordian knot occult unknown anybody's guess anyone's guess difficult proposition how-do-you-do snarl awkward problem can of worms toughie hard nut to crack brain-twister knotty problem intricacy complication maze rebus food for thought koan Chinese puzzle rune inscrutability inscrutableness secrecy subtlety obscurity ambiguity thriller grabber oracle chiller whodunit sphinx tickler mind-bender inexplicableness mystique quiz magic sixty-four thousand dollar question imponderable involvement fix inextricability obfuscation contradiction dichotomy incongruity inconsistency conflict anomaly oddity oxymoron absurdity antinomy catch irony juxtaposition error shocker self-contradiction catch-22 contradiction in terms reverse psychology “That was a real head-scratcher and, if I'm honest, I didn't quite believe it.” Find more words! 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Words that rhyme with head-scratcher What is the plural of head-scratcher? Use our Synonym Finder Nearby Words head-scratchers head-scratching head-scratchings heads-down head servant headset head scarves headscarves head scarf headscarf headsails headsail