Open English Wordnet
Adjectives
(s)enigmatic, enigmatical, puzzlingnot 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”
(s)confusing, perplexing, puzzlinglacking clarity of meaning; causing confusion or perplexity“sent confusing signals to Iraq”, “perplexing to someone who knew nothing about it”, “a puzzling statement”