울긋불긋 물든 단풍

"울긋불긋" (colourfully) is a "의태어" (擬態語) that best describes autumn scenery. It's never easy to commit "의태어" or "의성어" to memory. But in the case of "울긋불긋", I had it in my head while cramming for my first KLPT. The detailed explanation of "울긋불긋" is best left to the leaves in autumn.