(1) For understandable reasons, the pulmonary circulation remains an enigma to most doctors.(2) After such a long struggle and the loss of her sons in unequal battles, she understands the enigma of life.(3) Like this person was an enigma , a thousand puzzles beneath a vulnerable skin.(4) Madeleine was still an enigma to him(5) And with each biographical effort to understand him, that enigma has become more, not less, obscure.(6) The Dane is truly an enigma whose ever-changing fortunes are shrouded in mystery.(7) The two of them were a mystery, an enigma that ZoÔö£┬¢ had promised herself she would solve someday.(8) The script is slack and messy, in a way which does not suggest enigma or mystery - just the need for a couple more drafts.(9) It is in any case an enigma which neither one can explain properly nor one can understand properly.(10) He was no longer the soldier, no longer the enigma , and no longer a mystery.(11) One critic has said the film is: an enigma , as difficult to like as it is to dismiss.(12) A Gazette article earlier this year highlighted an enigma that has long puzzled me.(13) His concept of political morality is not merely a paradox; it is indeed a conundrum wrapped in an enigma .(14) What is left is the puzzle and the enigma that we need to figure out.(15) Now, some of us know that Moss is a mystery wrapped up in an enigma , and that he's often referred to as not the most approachable of characters.(16) In the first half of the novel, Kilroy creates the enigma , which she proceeds to unravel in the second half.