Time spent pondering something confusing.
present participle of puzzle
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"
lacking clarity of meaning; causing confusion or perplexity
"sent confusing signals to Iraq"
"perplexing to someone who knew nothing about it"
"a puzzling statement"
Difficult to understand or explain; enigmatic or confusing; perplexing.