1. put on special clothes to appear particularly appealing and attractive
e.g. She never dresses up, even when she goes to the operaThe young girls were all fancied up for the party
Synonym: overdressfig outfig updeck upgussy upfancy uptrick updeck outtrick outprinkattireget uprig outtog uptog out
2. dress in a certain manner
e.g. She dresses in the latest Paris fashionhe dressed up in a suit and tie
Synonym: dress
3. dress in a costume
e.g. We dressed up for Halloween as pumpkins
Synonym: costume
4. make something appear superficially attractive
e.g. The researcher tried to dress up the uninteresting dataDon't try to dress up the unpleasant truth
Synonym: window-dress
5. put a caparison on
e.g. caparison the horses for the festive occasion
Synonym: caparisonbardbarde