class up

class up (third-person singular simple present classes up, present participle classing up, simple past and past participle classed up)

1. (transitive, informal) To make more classy or sophisticated

   to class up the joint

   • 2015, C.A. Portnellus, The Road Home: Book Three of Sparrow Wars in the Garden of Bliss:

     A good looking moose working in their café probably was not her father's idea of classing up the place.

   • 2018, Kathy Lyons, Sliding Home:

     It [a simple black sheath] was formal, could be classed up with my simple gold hoop earrings, and the neckline barely plunged at all.