Conundrum (6)
'conundrum' is the definition.
(synonyms)
This is all the clue.
(Other definitions for enigma that I've seen before include "German military cipher machine" , "cryptic puzzle!" , "Puzzling person/thing" , "WWII cipher" , "Coding device" .)
'conundrum' is the definition.
(I know that conundrum can be written as riddle)
This is the entire clue.
(Other definitions for riddle that I've seen before include "mystery" , "Perforate with gunshot - poser" , "Make many openings" , "Gradual assimilation of ideas or knowledge" , "Screen" .)
'conundrum' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for teaser that I've seen before include "One who irritates playfully" , "One who pulls someone's leg" , "Difficult question" , "One who annoys people or cards wool" , "Introduction to arouse curiosity" .)
'conundrum' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for mystery that I've seen before include "Something difficult to understand" , "Unexplained phenomenon" , "tale of suspense" , "associated with Macavity" , "Something baffling" .)
'conundrum' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for poser that I've seen before include "Brain-teaser" , "Puzzling problem" , "Sticky problem" , "Difficult problem" , "Hard question" .)