enigmatic -
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"
ambiguous having more than one possible meaning; "ambiguous words"; "frustrated by ambiguous instructions, the parents were unable to assemble the toy"
enigmatic -
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"
uncomprehensible,
incomprehensible difficult to understand; "the most incomprehensible thing about the universe is that it is comprehensible"- A. Einstein
