puzzling

verb

1. (form-of, gerund, participle, present)present participle and gerund of puzzle

adj

1. Difficult to understand or explain; enigmatic or confusing; perplexing.

   “Sunning himself on the board steps, I saw for the first time Mr. Farquhar Fenelon Cooke.[…]A silver snaffle on a heavy leather watch guard which connected the pockets of his corduroy waistcoat, together with a huge gold stirrup in his Ascot tie, sufficiently proclaimed his tastes.[…]But withal there was a perceptible acumen about the man which was puzzling in the extreme.”

noun

1. Time spent pondering something confusing.