Enigmatic is an adjective that means mysterious.
Enigma comes to us directly from Greece, where it means ‘riddle.’ Comic book fans may recall a character named Ed Nygma, the alter ego of the Batman villain known as The Riddler. Not everyone called enigmatic has such a direct connection to riddles, but the word generally refers to those who are — like a riddle — difficult to figure out.
Having Eric as a boss can be a challenge. It’s hard to figure out the needs of someone so enigmatic.