puzzling
1. [ adjective ] not clear to the understanding
Synonyms: enigmatic enigmatical
Examples:

"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"

Related terms: incomprehensible
2. [ adjective ] lacking clarity of meaning; causing confusion or perplexity
Synonyms: perplexing confusing
Examples:

"sent confusing signals to Iraq" "perplexing to someone who knew nothing about it" "a puzzling statement"

Related terms: unclear