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
   • 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.

   to class up the joint