IPA: /ɪˈnɪɡmətɪkəl/
KK: /ɪˈnɪɡmətɪkəl/
Relating to something that is mysterious or difficult to understand.
The artist's work has an enigmatical quality that leaves viewers pondering its meaning.
Enigmatical → It is formed from "enigma" (from Greek "ainigma", meaning riddle or puzzle) and the suffix "-ical" (meaning pertaining to). The word "enigmatical" describes something that is puzzling or difficult to understand, relating to a riddle.
Think of a riddle or puzzle ('enigma') that is 'pertaining to' something mysterious or hard to grasp, which is what 'enigmatical' means.