quul Share definition Flag Quul (pronounced kewl) is an adjective which means cool and cute at the same time. For example, it can be used to describe babies with sunglasses. OMG! Wow, look at her baby, it's sooooooo QUUL with those shades!! quul by lonely-boy December 17, 2019 0 0 Get merch Get the quul mug. Buy Now — $32.95 See more merch