enigmatic in WordNet English dictionary

1. resembling an oracle in obscurity of thought
   "the oracular sayings of Victorian poets"; "so enigmatic that priests might have to clarify it"; "an enigmatic smile"
   enigmatic  oracular 
   
2. 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"
   enigmatic  enigmatical  puzzling