puzzling -
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
puzzling -
lacking clarity of meaning; causing confusion or perplexity; "sent confusing signals to Iraq"; "perplexing to someone who knew nothing about it"; "a puzzling statement"
