1. 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

Similar word(s): incomprehensible, uncomprehensible, enigmatical, puzzling

2. resembling an oracle in obscurity of thought

- so enigmatic that priests might have to clarify it

- an enigmatic smile

Similar word(s): ambiguous, oracular