v.1. To clothe someone or something: They dressed their dolls up in outfits they made themselves. The store owner dressed up the mannequin and put it in the window of the store.
2. To wear formal or fancy clothes: The students dressed up and went to the prom.
3. To dress someone in clothes suited for some particular occasion or situation: We dressed up the children for the cold weather. We'll need to dress ourselves up for wet weather. I can see you're dressed up to go hiking.
4. To wear clothes suited for some particular occasion or situation: People usually dress up in white to play tennis.
5. To make something appear more interesting or attractive than it actually is: The real estate agent dressed up the truth about the old house. The story of my trip was pretty boring, so I dressed it up with colorful exaggerations.