Enigmata [noun]

As a man, Malcolm X was an enigma, transforming himself multiple times in his short life.

Even as he ascends to the top of China’s billionaire class, Zhong remains an enigma.

Box has always been a bit of an enigma for Wall Street, and perhaps for enterprise software in general.

Although the new research goes a long way to dispelling some of the mystery surrounding the tuatara, there is much to learn about these scaly enigmas.

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.

The Bar-O, with its mixed up domestic complications, was still an isolated enigma.