enigma

As great as this feat was, an equally demanding test followed: to conceal from the Nazis that Enigma had been beaten.

Madame Cézanne is ultimately about the figure in the portraits rather than the person, who remains a tantalizing enigma.

He was a paragon of masculinity—a tall, dark, and impossibly handsome enigma.

The name is "an enigma even to me," Taylor says -- an appropriately mysterious moniker to make spiritual music under.

Lil B is a mystery wrapped in an enigma wrapped in a song about Ellen Degeneres.

To Lucy Warrender, who now heard of the matter for the first time, these initials were no enigma.

He tells me that La Fayette has fled; but when, where, or for what purpose, is all equally an enigma.

Aristide looked mournfully over the rain-swept common through the leaded panes, and speculated on the enigma of woman.

The Man in the Iron Mask is an enigma which each one attempts to solve.

“You tempt one to enquire the length of the reign of a satisfactory enigma,” cried Lady Engleton.