Denshi Jisho — Online Japanese dictionary

なぞ 1: riddle; puzzle; enigma; mystery;
2: (No-adjective) enigmatic; mysterious
Common word, Noun 
なぞなぞ riddle; puzzle; enigma
Common word, Noun 
なぞなぞ riddle; puzzle; enigma
Noun 
かけ なぞかけ a particular type of riddle
Noun 
掛け なぞかけ a particular type of riddle
Noun 
解き なぞとき solution of a riddle
Noun 
めく なぞめく to be enigmatic or puzzling; to be wrapped in mystery
Godan verb with ku ending, Intransitive verb 
を解く なぞをとく to solve a mystery
Expression, Godan verb with ku ending 
をかける なぞをかける to pose a riddle
Expression, Ichidan verb 
を掛ける なぞをかける to pose a riddle
Expression, Ichidan verb 

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