Main entry: dress down, underdress
Definition: dress informally and casually
Usage: On Fridays, employees can underdress
Antonyms: trick out, trick up, tog out, tog up, prink, rig out, dress up, deck out, deck up, attire, overdress, get up, gussy up, fig out, fig up, fancy up
Definition: put on special clothes to appear particularly appealing and attractive