Enigma (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">enigma</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that enigma can be written as riddle)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for riddle that I've seen before include "Ingenious question" , "Word puzzle or coarse sieve" , "Strain" , "Brain-teaser and coarse sieve" , "The large sieve is a puzzle" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">enigma</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that enigma can be written as mystery)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for mystery that I've seen before include "Secret doctrine" , "associated with Macavity" , "It can't be explained" , "Something strange and inexplicable" , "Something difficult to understand" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">enigma</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that enigma can be written as conundrum)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for conundrum that I've seen before include "Poser" , "Difficult problem" , "Puzzle, riddle" , "Difficult question" , "Puzzling question" .)