adjective [usually ADJECTIVE noun] If you describe something as fancy, you mean that it is special, unusual, or elaborate, for example because it has a lot of decoration.

Definitions of dress up. verb. put on special clothes to appear particularly appealing and attractive. “She never dresses up, even when she goes to the opera” synonyms: attire, deck out, deck up, fancy up, fig out, fig up, get up, gussy up, overdress, prink, rig out, tog out, tog up, trick out, trick up dress.