doozy

noun

1. (US, colloquial)Something that is extraordinary: often troublesome, difficult or problematic, but sometimes extraordinary in a positive sense.

   “Most of the test was easy, but the last question was a doozy.”

   “"Boy!" said Hazel, "that was a doozy, wasn't it?" It was such a doozy that George was white and trembling, and tears stood on the rims of his red eyes.”

   “Like the em unit, the rem unit is based on declared font size. The difference — and it’s a doozy — is that whereas em is calculated using the font size of the element to which it’s applied, rem is always calculated using the root element.”

adj

1. (US, dated, not-comparable, slang, usually)Of high quality; remarkable; excellent.

   “As soon as the races were billed he began to evolve Schemes — one Doozy scheme followed the other...”

   “The hydra wasn't the doozy? How could it not be the doozy? What could be doozier than that?”

2. (US, dated, not-comparable, slang, usually)Sporty, ostentatious, flashy.

   “Who was that doozy fellow I saw you with?”

   “Sweetie, do let me show you the dooziest little afternoon frock that Poiret designed for me in Paris.”