puzzling

adjectives

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