Enigmatical in a sentence as an adjective

He was one of the most noticeable members of the Reform Club, though he seemed always to avoid attracting attention; an enigmatical personage, about whom little was known, except that he was a polished man of the world. Notice how there's an extra sentence at the end about him having an enigmatic personage not present in the French version.

Enigmatical definitions

adjective

not clear to the understanding; "I didn't grasp the meaning of that enigmatic comment until much later"; "prophetic texts so enigmatic that their meaning has been disputed for centuries"

See also: enigmatic puzzling