rig out v 1: put on special clothes to appear particularly appealing and attractive; "She never dresses up, even when she goes to the opera"; "The young girls were all fancied up for the party" [syn: {overdress}, {dress up}, {fig out}, {fig up}, {deck up}, {gussy up}, {fancy up}, {trick up}, {deck out}, {trick out}, {prink}, {attire}, {get up}, {rig out}, {tog up}, {tog out}] [ant: {dress down}, {underdress}]